Sassafras is an aromatic native North American tree best known in Louisiana cooking as the plant behind filé powder.
Its scientific name is Sassafras albidum, and it belongs to the laurel family. The tree grows naturally across much of the eastern United States, including Louisiana, and is famous for producing several differently shaped leaves on the same plant.
For Louisiana cooks, the important part is simple: dry the leaves, grind them finely, and you have the foundation of gumbo filé.
What Does a Sassafras Tree Look Like?
Sassafras is one of the easier native trees to recognize once you know what to look for.
A single tree can produce three characteristic leaf shapes: an ordinary unlobed oval leaf, a leaf with one side lobe that resembles a mitten, and a three-lobed leaf. Young stems can be green, while older trees develop reddish-brown, furrowed bark.
The tree is also highly aromatic. Bruising a leaf or twig releases a spicy fragrance that the National Park Service compares to the familiar aroma of root beer.
That smell is not a coincidence.
Is Sassafras the Plant Used to Make Filé Powder?
Yes.
Traditional Louisiana filé powder is made from dried and ground sassafras leaves. The leaves are harvested, cured or dried, stripped of tougher stems, and pulverized into a fine green powder.
Filé is used primarily with gumbo, where it contributes both flavor and thickening power.
The finished powder can taste earthy, herbal, slightly peppery, and, depending on the leaves and processing method, somewhat lemony or reminiscent of coriander. 64 Parishes notes that carefully dried fresh green sassafras can produce particularly bright and aromatic filé.
Why Is Sassafras Important to Louisiana Cooking?
Because sassafras represents one of the major Indigenous contributions to Louisiana food.
Choctaw people in the region were gathering, drying, and grinding sassafras leaves long before French colonization. That knowledge later became incorporated into Louisiana gumbo traditions through what is now commonly called filé.
The history is worth stating carefully. Scholars continue to debate some popular claims about whether a Choctaw term for ground sassafras is connected to the origin of the word gumbo itself. What is much clearer is that Native peoples used sassafras and that Indigenous filé traditions became an important part of Louisiana cooking.
That distinction keeps the history interesting without forcing it into a cleaner origin story than the evidence supports.
Is Sassafras Cajun or Creole?
Sassafras itself is neither.
It is a native plant that existed in the region before Cajun and Creole cuisines developed. Its use by Native peoples predates both culinary traditions.
Filé later became incorporated into both Cajun and Creole gumbo traditions, although how and when it is used varies by cook, family, and region. Some cooks stir filé into gumbo near the end; others place it on the table for diners to add individually.
Calling sassafras exclusively Cajun or exclusively Creole therefore misses the older story.
What Parts of Sassafras Have Been Used?
Historically, people have used several parts of the sassafras tree.
The leaves are the part most important to Louisiana cooking today because they are used for filé. Roots and root bark were historically used for teas, beverages, flavorings, and other preparations, while the tree’s aromatic oils also found non-food uses.
Those uses should not all be treated as interchangeable.
Modern culinary filé is specifically associated with the leaves.
Was Sassafras Used in Root Beer?
Yes, historically.
Sassafras root and bark contributed the characteristic flavor associated with early forms of root beer and sassafras tea. The plant’s distinctive aroma remains so closely associated with root beer that several federal sources use that comparison when describing it.
Modern commercial root beer generally does not rely on untreated sassafras oil because of safrole, a naturally occurring compound concentrated particularly in sassafras oil and root material. Federal food regulations prohibit safrole as a direct food additive, while FDA listings separately recognize safrole-free sassafras ingredients for food flavoring.
That brings us to an important distinction.
Is Filé Powder Safe if Sassafras Contains Safrole?
The filé used in Louisiana cooking is made from sassafras leaves, not from sassafras root oil.
FDA’s current food-substance inventory specifically lists safrole-free sassafras leaves as a flavoring ingredient and separately recognizes safrole-free sassafras extracts.
This is why conversations about old-fashioned sassafras root tea or sassafras oil should not automatically be applied to a jar of commercial gumbo filé.
They involve different parts and preparations of the plant.
For ordinary cooking, commercially produced food-grade filé is the appropriate product rather than experimenting with homemade root or oil preparations.
Where Does Sassafras Grow?
Sassafras is native across a broad portion of the eastern United States, extending from parts of New England and the Great Lakes southward through the Southeast and west toward eastern Texas and Oklahoma.
It often behaves as a pioneer tree, appearing in old fields, woodland edges, disturbed areas, roadsides, and open ground. It can spread through underground roots and form small thickets rather than growing as isolated trees.
LSU AgCenter identifies sassafras as a Louisiana native suitable to poorer sandy upland soils and notes its leaves’ use for filé.
So filé is not made from some exotic spice imported halfway around the world.
The source can be growing in Louisiana woods.
How Big Does Sassafras Get?
Its size depends greatly on conditions.
The U.S. Forest Service describes sassafras as a medium-sized tree that can remain shrubby on poor or dry sites but grow considerably larger in favorable conditions. It is moderately fast-growing and frequently colonizes open areas.
For food purposes, however, size is not the attraction.
The leaves are.
Does Sassafras Have Fruit?
Yes.
Sassafras trees produce small dark-blue or blue-black fruits on distinctive reddish stalks. The fruits are eaten by wildlife, particularly birds, which help distribute the seeds.
Those berries are not what becomes filé.
Once again, Louisiana cooking is interested primarily in the leaves.
Why Does Sassafras Smell So Distinctive?
The tree contains aromatic compounds throughout its tissues, giving leaves, twigs, bark, and roots noticeable fragrances.
The exact aroma depends on which part of the plant is being handled. Bruised leaves can smell spicy and herbal, while root-associated aromas are more strongly connected with the familiar old-fashioned root-beer scent.
Freshly made filé can therefore be surprisingly fragrant compared with an old jar that has spent several years waiting behind the salt shaker.
Like most ground herbs, it loses aromatic intensity with time.
Is Sassafras Still Harvested Traditionally in Louisiana?
Yes.
Southern Foodways Alliance documented Louisiana filé maker Lionel Key, who learned how to harvest, cure, and pulverize sassafras leaves from his great-uncle Joseph William Ricard. Key continued demonstrating traditional filé making with a mortar and pestle whose family history reached back to the early twentieth century.
64 Parishes has likewise documented Louisiana filé makers who gather leaves by hand, dry them, remove the stems, and grind them using traditional methods.
That means filé survives as more than a packaged grocery product.
It remains a craft.
Why Does Careful Sassafras Harvesting Matter?
Harvesting leaves improperly can damage the trees.
64 Parishes has documented concerns about people cutting entire branches instead of carefully gathering leaves, particularly when harvesting sassafras for filé. Removing too much woody growth can weaken trees and reduce the future supply of an ingredient tied to a longstanding Louisiana tradition.
There is also a newer ecological problem.
LSU AgCenter reports that laurel wilt, a fungal disease spread by the invasive redbay ambrosia beetle, has been killing sassafras trees in Louisiana since the disease was first confirmed in the state in 2014. The fungus blocks the tree’s water-conducting system and can kill infected trees rapidly.
Protecting sassafras therefore has culinary as well as ecological significance.
Sassafras Is Bigger Than Filé
For many Louisiana cooks, sassafras enters the conversation only when somebody reaches for filé.
But the tree has a much longer story.
It is a native aromatic plant used by Indigenous peoples long before European settlement. Its roots became associated with beverages such as sassafras tea and early root beer, while its dried leaves became embedded in one of Louisiana’s most important culinary traditions.
Today, one of sassafras’s most recognizable culinary forms is still remarkably simple:
Pick the leaves.
Dry them.
Grind them.
Put a little Louisiana history into the gumbo.
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