Best Substitutes for Arrowroot Starch
Arrowroot starch is a fine white powder extracted from the roots of tropical plants. It works as a thickener and binding agent with 3 key properties: it creates a glossy, clear finish when heated (unlike flour which makes things cloudy), it thickens at lower temperatures (around 158F vs 212F for flour), and it holds up to acidic ingredients without breaking down. Arrowroot contains almost pure starch with no protein or fat, making it perfect for paleo and grain-free recipes. When you substitute, you need something that matches its neutral flavor and smooth texture without adding grittiness or cloudiness.
Best Overall Substitute
Tapioca starch at a 1:1 ratio. It behaves almost identically to arrowroot in both thickening power and texture, creates the same glossy finish, and works in all the same applications from pie fillings to crispy coatings.
All Substitutes
Tapioca starch
1:1Tapioca starch comes from cassava root and has nearly identical properties to arrowroot. Both thicken at low temperatures around 158F and create a glossy, clear finish. Tapioca provides the same binding strength in gluten-free baking and creates equally crispy coatings when used for frying. The texture difference is minimal, though tapioca can be slightly more elastic. Mix with cold liquid first to prevent lumps, just like arrowroot.
Cornstarch
1:1Cornstarch thickens slightly more than arrowroot, so you get similar results at the same ratio. It creates a less glossy finish and can turn cloudy in acidic mixtures after 10-15 minutes. Cornstarch needs higher heat (around 203F) to fully activate compared to arrowroot's 158F. The texture is smooth but not as silky. Works perfectly for gravies and stir-fry sauces where the cloudiness doesn't matter.
Potato starch
1:1Potato starch has stronger thickening power than arrowroot but works at the same 1:1 ratio because it creates a slightly different texture. It thickens at around 140F (even lower than arrowroot) and holds up well to freezing and reheating. The finish is glossy like arrowroot but with more body. Potato starch can get gluey if overworked, so mix gently once added.
Rice flour (superfine)
1.5:1 (use 1.5 tbsp rice flour per 1 tbsp arrowroot)Superfine rice flour has weaker thickening power than arrowroot, so you need 50% more. It creates a slightly grainy texture compared to arrowroot's silky smoothness. Rice flour works best when cooked for 3-5 minutes to eliminate any raw taste. The finish is less glossy but still acceptable for most applications. White rice flour performs better than brown for neutral flavor.
Kuzu root starch
1:1Kuzu (also called kudzu) is the closest substitute to arrowroot in terms of thickening power and texture. It creates an even glossier finish and has a slightly jelly-like quality when set. Kuzu costs 3-4 times more than arrowroot but performs identically in recipes. It thickens at low temperatures around 160F and works especially well in Asian-style sauces and jellied desserts.
All-purpose flour
2:1 (use 2 tbsp flour per 1 tbsp arrowroot)All-purpose flour has much weaker thickening power than arrowroot and creates a cloudy, matte finish instead of glossy. You need double the amount and must cook for 2-3 minutes to eliminate the raw flour taste. Flour works better for gravies and rustic sauces where clarity isn't important. It adds a slight wheat flavor that arrowroot doesn't have.
Ground flaxseed
3:1 (use 3 tbsp ground flaxseed per 1 tbsp arrowroot)Ground flaxseed works only as a binding agent in baking, not as a thickener for liquids. Mix 3 tablespoons ground flaxseed with 1 tablespoon water, let sit for 5 minutes until gel-like, then use this mixture to replace 1 tablespoon arrowroot in baking recipes. It adds nutty flavor and brown color, plus significant fiber and omega-3s. Works only in recipes where binding is the main function.
How to Adjust Your Recipe
When substituting for arrowroot in thickening applications, always mix the substitute with cold liquid first to create a slurry. This prevents lumps from forming when you add it to hot mixtures. For cornstarch and flour substitutes, bring the mixture to a full boil for 30-60 seconds to activate the thickening power completely.
In gluten-free baking, arrowroot provides structure and helps bind ingredients. Tapioca starch works identically, but cornstarch makes baked goods slightly more tender. If using potato starch, reduce other liquids by 1-2 tablespoons per 1/4 cup of starch since it absorbs more moisture.
For crispy coatings, arrowroot creates an ultra-light, crunchy texture. Tapioca starch gives the same results. Cornstarch works but creates a slightly denser coating. Mix any starch substitute with 25% rice flour for extra crispiness.
When Not to Substitute
Don't substitute arrowroot in recipes where its specific low-temperature thickening is crucial, like delicate custards that can't handle high heat. Avoid substitutes in clear fruit glazes where cloudiness ruins the appearance (cornstarch and flour both turn cloudy). Skip flour-based substitutes entirely in grain-free or paleo recipes since they defeat the purpose.
Frozen desserts that rely on arrowroot's freeze-thaw stability shouldn't use cornstarch, which can separate when frozen. Professional pastry applications requiring arrowroot's neutral flavor and glossy finish work best with kuzu or tapioca starch only.
Frequently Asked Questions
Can I use cornstarch instead of arrowroot for gluten-free baking?
Yes, use cornstarch at a 1:1 ratio for arrowroot in gluten-free baking. Cornstarch provides similar binding power and creates tender textures. Your baked goods may be slightly more delicate since cornstarch has stronger thickening power. The flavor remains neutral, and the texture difference is minimal in most recipes like muffins and quick breads.
How much tapioca starch equals 2 tablespoons of arrowroot?
Use exactly 2 tablespoons of tapioca starch to replace 2 tablespoons of arrowroot. They work at a perfect 1:1 ratio in all applications. Both starches have nearly identical thickening power, create the same glossy finish, and behave the same way when heated. No other adjustments needed to your recipe.
What happens if I use too much arrowroot substitute?
Too much starch substitute creates a gummy, gel-like texture that's unpleasant to eat. With cornstarch, excess amounts (more than 2 tablespoons per cup of liquid) make mixtures cloudy and chalky. Tapioca starch becomes stringy and elastic when overused. Start with 25% less than the recipe calls for, then add more gradually until you reach the desired thickness.
Can I substitute arrowroot with regular flour in pie filling?
Use 2 tablespoons of flour for every 1 tablespoon of arrowroot in pie fillings. The filling will be cloudier and less glossy than with arrowroot. Cook the pie for an additional 5-10 minutes to ensure the flour taste disappears completely. Flour-thickened fillings have a more rustic appearance but taste just as good.
Is potato starch a good substitute for arrowroot in Asian cooking?
Yes, potato starch works excellently in Asian cooking at a 1:1 ratio for arrowroot. It creates glossy, thick sauces perfect for stir-fries and braised dishes. Potato starch thickens at lower temperatures (140F) than even arrowroot, so add it at the end of cooking. The texture is slightly more substantial but equally smooth and appealing.