Best Cornstarch Substitute in Doughnuts

Potato starch is a fine, white starch extracted from potatoes that gelatinizes at a similar temperature to cornstarch, allowing it to create a light, crisp crust on fried doughnuts. It also helps retain moisture, preventing dryness in the crumb.

When using potato starch, ensure it is fresh and not exposed to moisture before frying, as it can clump. Mix it thoroughly with the dry ingredients for even distribution.

Compared to cornstarch, potato starch produces a slightly more tender crumb and a crisp exterior that holds up well during frying, making it the closest functional equivalent.

Rice flour is a fine, gluten-free flour that contributes to crispness in fried goods by absorbing moisture and creating a dry crust. It partially mimics cornstarch’s effect but lacks the same gelatinization properties.

To avoid a gritty texture, combine rice flour with a small amount of wheat flour or another starch if gluten is acceptable. Monitor frying temperature carefully to prevent over-browning.

Doughnuts made with rice flour tend to be crisper but may lose some tenderness and lightness compared to cornstarch.

Wheat flour contains gluten proteins that develop elasticity and chewiness, which is different from the tenderizing effect of cornstarch. It thickens batters but does not create the same light, crisp crust.

Use wheat flour only if gluten is not a concern and expect a denser texture. Adjust frying time to prevent overcooking due to the heavier batter.

The final doughnuts will be more bread-like and less delicate in texture compared to those made with cornstarch.

Arrowroot powder is a starch derived from tropical plants that thickens and gels similarly to cornstarch. However, it is less stable at high frying temperatures and can break down, causing a gummy or sticky texture on doughnuts.

To minimize this, fry at moderate temperatures and avoid prolonged frying times. Use arrowroot only if other starches are unavailable.

Doughnuts may have a less crisp exterior and a slightly sticky mouthfeel compared to those made with cornstarch.

Tapioca starch is a highly elastic starch that forms a gel-like texture when heated. While it can thicken batters, its elasticity can cause doughnuts to have a gummy or chewy texture rather than the desired lightness.

If used, combine with other starches to balance texture and avoid excessive chewiness. Monitor frying closely to prevent overcooking.

The final product will be less crisp and more elastic than doughnuts made with cornstarch.