What Is Enfleurage? A Guide to the Traditional Flower Extraction Method

Enfleurage is a perfume extraction method in which fresh flowers are placed in contact with a nearly odorless fat. As the flowers release volatile aromatic compounds, some of those compounds move into the fat and remain there. The spent flowers are removed, fresh ones take their place, and the process is repeated until the fat has taken on a concentrated floral scent.

That simple description is accurate, but incomplete. Enfleurage is not one fixed recipe, and it does not produce an essential oil in the usual sense. Flower condition, harvest timing, temperature, humidity, fat composition, contact time, and the number of flower changes all affect the result. The method can preserve aspects of a flower that are difficult to obtain by distillation, but it never produces a perfect chemical copy of the living bloom.

I use enfleurage as one part of my material work at House of Enfleurage, alongside tincturing and oil infusion. I have completed pomades from rose, peony, lilac, and viburnum. Gardenia and additional rose pomades are currently being charged, while black cherry dianthus remains experimental. Tuberose and Mexican orange are planned when the plants produce enough flowers. This work has made the variability of the process impossible to ignore. Two flowers gathered from the same garden may require very different handling. Even two cultivars of the same species can give the fat a different balance of floral, green, indolic, spicy, or waxy notes.

This guide explains the historical process, the terminology surrounding it, and what enfleurage can realistically offer a contemporary perfumer.

How does enfleurage work?

Flowers emit mixtures of volatile organic compounds, or VOCs. These molecules create what we perceive as floral scent. They arise through several biosynthetic pathways and may vary with species, cultivar, developmental stage, time of day, temperature, light, and pollination status.[1]

Many floral scent compounds have an affinity for a lipid phase. When a flower releases them near a layer of fat, some partition from the air and plant tissue into that fat. Historical perfumery texts generally described this as the fat “absorbing” the flower’s perfume. From a modern chemical perspective, the process is better understood as a combination of release, diffusion, dissolution, and partitioning rather than the fat simply pulling an intact essence from the petals.

The distinction matters. A fresh flower is not a sealed container holding one stable aromatic oil. It is living tissue with an odor profile that changes over time. Some cut flowers remain metabolically active and continue to produce and emit scent after harvest. Research on postharvest narcissus, for example, has shown that temperature and light conditions can change both the amount and composition of the scent emitted by cut flowers.[2] Historical perfumers had observed a version of this long before the underlying plant biology was understood.

In a 1945 account of commercial enfleurage, Edward Sagarin cited the nineteenth-century researcher Jacques Passy, who argued that certain flowers continued producing and exhaling perfume after they were picked.[3] That observation helped explain why prolonged contact with fat could recover a scent profile that did not behave like a conventional store of essential oil waiting to be distilled.

It does not follow that every flower continues emitting useful scent for the same length of time. Some collapse quickly. Some become sour, green, or indolic as they age. Others retain their character long enough to perfume the fat. This is why firsthand testing remains central to the method.

A brief history of enfleurage

Humans have infused aromatic plants into oils and fats since antiquity, but it is useful to distinguish those broad practices from the cold, chassis-based process now most strongly associated with the word enfleurage.

Cold enfleurage is documented in Grasse by the end of the eighteenth century, during the period when the region was developing an increasingly specialized perfume-material industry.[4] The technique became part of a much larger system that connected flower cultivation, harvesting labor, raw-material processing, and perfume composition. In 2018, UNESCO added “the skills related to perfume in Pays de Grasse” to its Representative List of the Intangible Cultural Heritage of Humanity, recognizing those three connected areas of knowledge.[5]

By the nineteenth century, technical manuals described both fat-based flower extraction and the subsequent use of alcohol to recover the aromatic material. G. W. Septimus Piesse’s The Art of Perfumery, first published in 1857, recorded repeated flower charges, scented pomades, and the markedly different odors obtainable from the same flower through different extraction methods.[6]

Industrial enfleurage was highly organized. Refined fat was spread across framed glass plates called chassis. Fresh flowers were placed by hand, allowed to remain for a period determined by the material, and replaced repeatedly. The chassis could be stacked so the flowers occupied an enclosed space between fat-coated plates. Once sufficiently charged, the scented fat was removed and processed as pomade.

Sagarin’s 1945 description shows a process that was still commercially recognizable but already under pressure from newer technologies. He described cold enfleurage as being used principally for jasmine and tuberose, while volatile-solvent extraction had become commercially established by the end of the nineteenth century.[3] Solvent extraction offered greater throughput, more consistent industrial processing, and far less dependence on hand labor and large inventories of chassis.

Enfleurage did not disappear because it failed. It receded because it was expensive, labor-intensive, difficult to standardize, and poorly suited to the scale of modern fragrance manufacturing. Its survival today is largely artisanal.

Cold enfleurage versus hot enfleurage

The term enfleurage is often used broadly, but historical technical sources distinguish two related fat-extraction methods.

Cold enfleurage

In cold enfleurage, flowers are placed on or immediately above fat held at room temperature. No sustained heat is applied during the flower charge. Fresh flowers replace spent ones until the fat develops the desired strength and character.

This is the method most people now picture when they hear enfleurage. It was especially important for flowers whose scent was altered by heat or whose useful aromatic material was difficult to recover through steam distillation.

Hot enfleurage or maceration

In the hot method, historically also called maceration or digestion, flowers are immersed in warmed fat. They are strained out and replaced with fresh material through multiple charges. Sagarin described maceration as related to cold enfleurage but differentiated by the use of softened, heated fat and the immersion of the flowers rather than their placement on a chassis.[3]

Calling both methods enfleurage is common today, but “cold enfleurage” and “fat maceration” are clearer when the distinction matters.

The traditional cold-enfleurage process

Exact procedures varied among factories, flowers, seasons, and perfume houses. The historical process can nevertheless be understood in six stages.

1. Preparing the fat

The fat had to be stable, nearly odorless, and workable at ambient temperatures. Historical manufacturers commonly used carefully purified animal fats, including lard, sometimes blended to achieve the desired consistency. The fat needed to hold its structure on glass while remaining receptive to aromatic compounds.

Many contemporary artisans use plant-derived fats, waxes, or combinations of lipids instead. That is a modern adaptation, not a reason to rewrite the historical record. At House of Enfleurage, I have tested coconut oil, shea butter, and, most recently, organic RSPO Identity Preserved palm kernel oil. Palm kernel oil comes from the seed kernel of the oil palm fruit. It is not the same material as palm fruit oil, which comes from the fruit’s fleshy mesocarp. Under the RSPO supply-chain model, Identity Preserved means certified material from one identifiable certified source is kept separate from conventional palm oil throughout the supply chain.[8] Different fats have different odors, melting behavior, oxidative stability, and extraction selectivity, so they should not be treated as interchangeable. I do not consider the carrier a neutral technicality. It is one of the variables being tested.

My experience with those three plant fats has been meaningfully different:

Coconut oil was odorless and captured floral scent well. Its main disadvantage was texture. It frequently became harder than I wanted at room temperature, which made preparing an even, receptive surface for the next flower charge more difficult.

Shea butter had a slight odor of its own, which was not ideal for delicate flowers. It also developed a somewhat stretchy texture as I worked with it. During the later alcohol-extraction stage, however, it held its structure better than the other fats I tested. Less fat appeared to dissolve into the alcohol, the phases separated more cleanly, and the resulting extract was easier to filter cleanly.

Palm kernel oil has so far combined the qualities I was looking for most. It is odorless, captures scent well, and remains slightly softer at room temperature. I can work the surface with a spoon until it is soft enough to receive the next flowers.

That last point has become one of my most useful practical lessons. When coconut oil became too hard, I experimented with placing it briefly in a slightly warm oven to soften the pomade without fully melting it. I now avoid that additional heat. Before adding a fresh charge, I use a clean spoon to gently roughen and work the surface. The mechanical movement softens the upper layer enough to improve contact with the petals.

This is a small procedural change, but it reflects how contemporary enfleurage actually develops at an artisan scale. The solution did not come from a fixed historical formula. It came from comparing materials, watching how they behaved between charges, and finding the least disruptive way to prepare the fat for fresh flowers.

2. Preparing the chassis

The prepared fat was spread over glass held in a wooden frame. Grooves or scored lines increased its effective surface area. Historical accounts describe fat applied to both sides of the glass so stacked chassis created enclosed layers of flowers and fat.[3]

A contemporary tray or plate can perform the same basic function at a smaller scale, but the geometry still matters. In my current setup, the flowers rest directly on the fat. I do not use a raised screen or other structure to suspend them above it. The thickness of the fat, the available surface area, air space, and the degree of contact can all influence the extraction.

3. Selecting and placing the flowers

Flowers were sorted and placed by hand. Damaged, wet, bruised, or decaying material could introduce unwanted odors and microbial growth. The goal was not simply to fit as many flowers as possible onto the surface. The flowers needed enough contact or proximity to transfer scent without becoming so embedded that removal carried away excessive fat or damaged the next charge.

Harvest stage matters. A flower that smells strongest on the plant is not automatically at its best after several hours on fat. Some continue opening after picking. Others deteriorate almost immediately. Time of day may also matter because many flowers follow circadian patterns of scent emission.[1]

4. Removing spent flowers and recharging

After an appropriate contact period, the flowers were removed and replaced with a fresh charge. In historical production this could continue for weeks, with the number of charges contributing to the pomade’s grade or strength.

There is no universally correct replacement schedule for small-batch work. Twenty-four hours appears frequently in historical and contemporary descriptions, but it is not a biological law. A thick gardenia may remain fragrant longer than a delicate lilac floret. A very indolic flower may move from full bloom to overripe quickly. Temperature can shorten or lengthen the useful interval.

This is one of the places where observation matters more than adherence to a borrowed formula. The flower should be changed before deterioration begins contributing more odor than the fresh bloom.

5. Collecting the pomade

Once the fat has received enough flower charges, it becomes an enfleurage pomade. The pomade is already a finished aromatic material. It can be evaluated and, depending on its composition and intended use, potentially used in a solid or oil-based perfume.

Pomade is not synonymous with essential oil. It is a perfumed fat containing both the carrier and the aromatic compounds captured from the flowers.

6. Washing the pomade with alcohol

Historically, producers could agitate the pomade with ethanol so that alcohol-soluble aromatic compounds moved out of the fat and into the alcohol. Sagarin called this alcoholic material lavage de pomade, or pomade washing.[3]

For my own pomade washes, I use 190-proof, or 95 percent, organic sugar cane ethanol from Lab Alley.[9] A high-proof, low-odor ethanol suitable for the intended perfumery use is important here. Common rubbing alcohol is generally isopropyl alcohol or a denatured ethanol product, while 80-proof beverage alcohol is only 40 percent ethanol by volume. Neither is an equivalent substitute for the material I use. Two-hundred-proof ethanol is not required for my process. High-proof ethanol is also highly flammable and should be handled away from heat, sparks, and open flame with appropriate ventilation.

Cooling and filtration help separate residual fat and wax from the alcoholic extract. If the ethanol is subsequently removed, traditionally under reduced pressure to limit heat exposure, the concentrated aromatic remainder is called an absolute of enfleurage or absolute of pomade.

These terms describe different stages:

Enfleurage pomade: the flower-scented fat

Pomade wash: the alcoholic extract of that fat

Absolute of enfleurage: the concentrated aromatic material remaining after the alcohol is removed

An artisan may choose to stop at the pomade or the alcoholic wash. Producing a technically clean absolute is a more demanding operation than simply leaving alcohol exposed to evaporate, and unnecessary heat or prolonged oxygen exposure can change the most volatile parts of the scent.

Does enfleurage reproduce the exact scent of a living flower?

No extraction method reproduces a living flower perfectly.

The scent we perceive in a garden is a changing headspace above living tissue. It is influenced by airflow, humidity, temperature, the flower’s stage of opening, and our proximity to different floral structures. Enfleurage selectively captures compounds that are emitted under the extraction conditions and that have an affinity for the chosen fat. Later alcohol washing introduces another selective step.

Research comparing hydrodistillation, solvent extraction, and enfleurage has found differences in yield, chemical composition, and sensory preference among extracts produced from the same fragrant flowers.[7] Those findings should not be generalized into a claim that one method is always superior. They demonstrate that extraction method shapes the material obtained.

In my own work, lilac enfleurage and lilac tincture do not smell interchangeable. The tincture draws out a greener, sharper aspect. The pomade can hold a softer floral body, but the result varies by cultivar and by the timing of the harvest. Viburnum has behaved differently again, giving the fat a creamier and more diffuse profile. These are working observations from specific plants and batches, not universal rules for every lilac or viburnum.

The value of enfleurage is therefore not that it freezes a flower with perfect fidelity. Its value is that it creates a distinctive perfume material through low-temperature contact with the fresh bloom.

Which flowers work well for enfleurage?

Historically, jasmine and tuberose are strongly associated with cold enfleurage. Rose, orange blossom, cassie, violet, hyacinth, and other flowers appear in discussions of cold or hot fat extraction, although the preferred method varied by material and period.[3][6]

For contemporary garden-scale work, the better question is not simply whether a flower is fragrant. My completed rose, peony, lilac, and viburnum pomades demonstrate that the method is not limited to the two flowers most often associated with historical commercial enfleurage. My current gardenia charges already smell promising, but the pomades are not yet complete. Black cherry dianthus is still an experiment, and tuberose and Mexican orange remain planned trials rather than finished materials.

A useful candidate generally has several qualities:

• A noticeable scent that persists after picking
• Enough bloom volume to support repeated charges
• Petals or flowers that can be removed cleanly
• A postharvest life long enough to release scent before decay
• An odor profile that remains attractive when concentrated in fat

Some intensely fragrant flowers perform poorly because they collapse quickly or contribute unwanted moisture. Some modest flowers become surprisingly clear in fat. Cultivar can matter as much as species. The only reliable way to assess an unfamiliar garden flower is through a controlled small trial with careful notes.

What usually goes wrong?

The most common difficulties are not mysterious. They are material and process problems.

Moisture and microbial growth

Fresh flowers contain water, and surface moisture adds more. Wet blooms, condensation, damaged tissue, dirty tools, or an overly humid enclosure can encourage mold and off-odors. Flowers should be clean and externally dry, but “dry” here does not mean using dried flowers. Cold enfleurage depends on fresh floral material.

Oxidized or strongly scented fat

The carrier is part of the final odor. A fat with its own prominent aroma, or one beginning to oxidize, can obscure a delicate floral material. Stability and sensory neutrality matter as much as texture.

Leaving flowers too long

More time is not always more extraction. Once a flower begins to brown, ferment, become overly indolic, or otherwise deteriorate, the fat can capture those changes too.

Assuming every charge will be identical

Weather, flower maturity, and harvest time shift across a blooming season. A useful process record includes dates, cultivar, time of harvest, condition of the flowers, ambient temperature, contact time, and sensory observations after every charge.

Expecting strength without enough plant material

Enfleurage is cumulative. A single layer of flowers may produce an interesting pomade, but delicate materials often require repeated charges and a great deal of bloom volume. This is one reason the method belongs naturally to seasonal, small-batch work rather than standardized mass production.

How is enfleurage different from tincturing and distillation?

These processes do not simply offer three routes to the same material.

Method	Primary extraction medium	Typical material produced
Cold enfleurage	Fresh flowers in contact with fat, without sustained heat	Scented pomade; an alcohol wash or absolute if processed further
Tincturing	Botanical material placed directly in ethanol	Tincture containing aromatics and other alcohol-soluble compounds
Steam distillation	Steam, heat, and subsequent condensation	Essential oil and aromatic water or hydrosol
Volatile-solvent extraction	A volatile solvent, followed by ethanol refinement	Concrete, then absolute

 

Cold enfleurage emphasizes compounds released by fresh flowers under the extraction conditions and able to partition into the lipid phase. Tincturing can also collect green, bitter, waxy, phenolic, or colored material from the plant. In distillation, heat, water solubility, and volatility shape which compounds survive and whether they remain in the essential oil or aromatic water. Volatile-solvent extraction recovers aromatic compounds together with waxes and other soluble material before the concrete is refined into an absolute.

The extraction method is part of the material’s identity. Asking which method is “best” without naming the flower and the desired scent profile is not especially useful.

Why practice enfleurage now?

Enfleurage makes little sense as an industrial efficiency exercise. It makes considerable sense when the material itself is the subject of study.

At a garden and stillroom scale, the process allows a perfumer to work with flowers that may not exist as commercial extracts, compare cultivars from the same garden, follow changes across a season, and create materials tied to a particular harvest. It also makes the limitations of botanical perfume extraction visible. The flower determines the pace, but the perfumer still makes consequential decisions at every stage.

That combination of plant variability and controlled observation is why I continue to use it. Enfleurage is not valuable because it is old. It is valuable when it produces an aromatic material worth using and teaches us something specific about the flower. In the flower-specific studies that follow this guide, I will share the practical decisions, useful results, and failures from my own batches. They are observations other makers can learn from, not fixed ratios presented as universal rules.

You can see some of my earliest lilac and viburnum work in The Forest in Bloom: Early Harvests and First Scents. Future entries in The Enfleurage Journal will examine lilac, gardenia, rose, tuberose, violet, and other flowers individually, including the cultivars, harvest decisions, failures, and scent differences that a general guide cannot fully capture.

References

1. M.-M. Lo, Z. Benfodda, R. Molinié, and P. Meffre, “Volatile Organic Compounds Emitted by Flowers: Ecological Roles, Production by Plants, Extraction, and Identification,” Plants 13, no. 3 (2024): 417.
2. M. I. Terry et al., “The Effect of Post-harvest Conditions in Narcissus sp. Cut Flowers Scent Profile,” Frontiers in Plant Science 11 (2021): 540821.
3. Edward Sagarin, The Science and Art of Perfumery (New York: McGraw-Hill, 1945), 42–50.
4. D. Leszczyńska, “L’influence de l’enracinement du savoir sur l’évolution d’un territoire: La parfumerie à Grasse,” Cahiers de la Méditerranée (2016); see also “La valorisation tardive des plantes à parfum et du savoir-faire grassois.”
5. UNESCO, “The Skills Related to Perfume in Pays de Grasse,” Representative List of the Intangible Cultural Heritage of Humanity, inscribed 2018.
6. G. W. Septimus Piesse, The Art of Perfumery and Methods of Obtaining the Odors of Plants, first published 1857.
7. W. Paibon et al., “Comparison and Evaluation of Volatile Oils from Three Different Extraction Methods for Some Thai Fragrant Flowers,” International Journal of Cosmetic Science 33, no. 2 (2011): 150–156.
8. Roundtable on Sustainable Palm Oil, “Supply Chains: Identity Preserved”; Jedwards International, “Palm Kernel Oil: Organic RSPO IP, 18 kg Pail.”
9. Alcohol and Tobacco Tax and Trade Bureau, “Definitions: Proof”; Lab Alley, “Organic Ethyl Alcohol, Sugar Cane, 190 Proof.”