Natural form

Fresh arrowroot tubers showing their knobby, segmented ivory-white roots.

Shows the reader what raw arrowroot looks like in its intact harvested state, making the plant unmistakable.

Produce

Arrowroot

Starchy tropical tuber, boiled as a vegetable or dried into a clear thickening starch.

Arrowroot is a starchy tropical tuber that is boiled and eaten as a root vegetable in parts of Africa and the Caribbean, and is also processed into a fine, neutral thickening starch. As a starch it produces a clear, glossy sauce and sets at a lower temperature than cornstarch. The fresh root has a mild, slightly nutty flavor when cooked.

Arrowroot is a refined starch extracted from the rhizomes of Maranta arundinacea, a perennial plant native to the tropical Americas and Caribbean. The rhizomes are harvested 8–11 months after planting, washed, peeled, and dried into a fine white powder that is nearly 100% starch with no protein. In the 19th century, arrowroot was a major Caribbean export crop, particularly from Bermuda and St. Vincent—the name itself derives from the Carib people's practice of using the plant's juice to draw poison from arrow wounds. Fresh tubers carry a faint, pleasant earthy aroma that disappears entirely once dried.

Arrowroot's defining trait is the clear, glossy gel it produces when cooked, unlike flour or cornstarch which cloud liquids. This transparency makes it the thickener of choice when visual clarity matters—glazes, delicate sauces, and fruit fillings where you want to see the ingredients beneath. It thickens faster than most other starches, reaching viscosity around 147°F (63°C), but loses power above 185°F (85°C) and gels irreversibly if boiled. It also breaks down in acidic conditions below pH 4.5, making it unsuitable for long-simmered tomato sauces or lemon-heavy preparations. Arrowroot is valued in professional kitchens for quick hydration and rapid viscosity development—sauces come together faster when timed correctly, though this speed demands attention.

Measured in: g
Storage: Pantry

Types & varieties

True arrowroot (Maranta arundinacea)

The standard culinary starch; originates from the Caribbean and South America; the most refined and widely available form

Canna arrowroot / Queensland arrowroot (Canna edulis)

Extracted from canna lily rhizomes; larger starch granules; used commercially but less refined than true arrowroot

East Indian arrowroot

From Curcuma species (often C. zedoaria); not a true Maranta; occasionally sold in its region of origin (India, Southeast Asia)

Thickening Mechanics

Arrowroot hydrates and thickens faster than other common starches. When added as a cold slurry to a hot liquid, it begins thickening around 147°F (63°C) and reaches full viscosity quickly. Unlike flour, which requires cooking to eliminate raw starch flavor, arrowroot's neutral taste means it can thicken without extended heat. The gel it forms is shear-thinning—it thins under stirring pressure but regains body when resting. This makes it useful for sauces that need to flow easily from a spoon but hold on the plate. The critical limitation is heat: sustained temperatures above 185°F (85°C) break the starch chains and thin the sauce irreversibly. Unlike cornstarch, which can be boiled and still hold, arrowroot must be added late and never boiled.

Use roughly 2 teaspoons arrowroot to thicken 1 cup of liquid—equivalent to 1 tablespoon cornstarch or 1 tablespoon flour
Always make a slurry: dissolve arrowroot in cold liquid first, then add to hot mixture
Never add dry powder directly to hot liquid—it will clump instantly and refuse to hydrate

Working with Acid

Arrowroot's intolerance for acid is one of its most important practical limitations. Below pH 4.5, the starch molecules break down and lose thickening ability entirely. This rules out long-simmered tomato sauces, preparations with significant lemon or vinegar added early in cooking, and highly acidic fruit fillings that cook for extended periods. If you must use arrowroot in a mildly acidic mixture, add it as late as possible in the cooking process and expect to use slightly more than usual. Monitor viscosity carefully—once it thins from acid exposure, adding more arrowroot will not restore body. Citrus is the single most common failure point for arrowroot in home kitchens; respect this limitation.

Never use arrowroot in a tomato sauce that simmers for 30 minutes or longer
For lemon or lime glazes, add arrowroot at the very end and use sparingly
Highly acidic tropical fruits like passion fruit require kudzu or tapioca instead

Common uses

Clear fruit glazes and pie fillings where transparency matters; arrowroot's clarity is unmatched among thickenersDelicate sauces, soups, and aspics where a glossy, transparent appearance is desiredLight batter coatings for fried foods; produces a crisper result than flour alone and stands up better during fryingBaby food and clear health tonics; easy digestibility and allergen-free profile make it ideal for sensitive dietsGluten-free baking as a flour substitute in combination with other starches like tapioca and rice flourCold-set desserts (puddings, mousses, gelées) where heat is not used to avoid breaking down the starchSoutheast Asian coconut milk preparations; thickens without clouding the milk or competing with its flavorReplacing cornstarch 1:1 in most recipes, with attention to lower heat requirements and acid sensitivity

Tips & pitfalls

Always slurry first: dissolve arrowroot in cold liquid before adding to a hot mixture—never add dry powder directly to hot liquid, which causes clumping that no amount of stirring will fix
Add arrowroot near the end of cooking; sustained high heat breaks the starch chains irreversibly and thins the sauce
If your sauce thins after adding arrowroot, do not add more arrowroot to re-thicken—this compounds the problem; instead, remove from heat and stir vigorously, then plan to use lower heat or add earlier next time
For a smoother, more stable texture in sauces, whisk in a small amount of neutral oil or fat after the arrowroot has thickened
When using arrowroot in acidic liquids, add it as late as possible and expect to use slightly more; monitor viscosity carefully as the acid continues to work
Arrowroot is not a direct substitute in recipes that call for flour as a roux base—roux requires the gelatinization of wheat starch plus the roux structure itself, not a pure starch powder
Common mistake: using arrowroot for a dish that will be frozen and reheated—tapioca starch is far more freeze-thaw stable for casseroles, pot pies, and similar preparations
Fresh arrowroot tubers can be boiled and eaten like potatoes; look for them in specialty Asian or Caribbean markets

Nutrition

65kcal

Energy

272 kJ · per 100 g

Where the calories come from

Protein 23%Carbs 74%Fat 2%

Protein

4.2g

8% DV

Carbs

13.4g

5% DV

Fat

0.2g

0% DV

Fiber

1.3g

5% DV

Sodium

26mg

1% DV

Notable micronutrients

Folate85% DV

Vitamin B616% DV

Thiamin (B1)12% DV

Iron12% DV

Niacin (B3)11% DV

Potassium10% DV

Source · USDA FoodData Central · Arrowroot, raw

View on FDC →

In the shops

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Good to know

Origin: Tropical Americas and Caribbean, now cultivated in Southeast Asia (Thailand, India, Indonesia, Philippines)
Plant family: Marantaceae
Part used: Rhizomes (underground stems), harvested 8–11 months after planting
Form: Fine white powder (most common); occasionally fresh whole tubers
Flavor: Neutral; adds no taste to dishes
Color when cooked: Clear and glossy; no cloudiness unlike flour or cornstarch
Heat tolerance: Thickens at 147°F (63°C); degrades above 185°F (85°C)
pH sensitivity: Breaks down below pH 4.5; avoid in acidic preparations like tomato sauce
Freeze-thaw stability: Poor; gels when frozen and thawed; not suitable for make-ahead frozen dishes
Storage (powder): Indefinitely in an airtight container in a cool, dry, dark place
Storage (fresh tuber): Refrigerate up to 1 week; wrap tightly to prevent drying

Substitutes

Tapioca starch (tapioca flour) — Best all-around substitute; produces a slightly more elastic, chewier result; use 1:1 ratio; handles acidic ingredients and freezing better than arrowroot
Potato starch — Good substitute; use 1:1 ratio; higher heat tolerance; adds a faint earthy note; clouds clear mixtures more than arrowroot
Cornstarch — Widely available substitute; use equal amount; requires higher cooking temperature to thicken fully; produces an opaque result
Kudzu starch (kuzu) — Japanese thickener derived from kudzu root; superior clarity and freeze-thaw stability; more expensive; use slightly less than arrowroot for equivalent thickness
Sweet rice flour — Creates a sticky, cohesive texture rather than smooth; best in desserts and fillings where that character is desired; use slightly more than arrowroot