Buying guide

Best starches for thickening sauces

Starches are not interchangeable in every sauce. This list ranks them by clarity, heat tolerance, texture, and pantry usefulness.

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Picks

8 total

No. 01

Amazon

Cornstarch

All-purpose thickening

The most practical first starch for gravy, stir-fry sauce, and pudding — slightly cloudy when cooked, gels around 195 °F, breaks down with long boiling.

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No. 02

Amazon

Arrowroot powder

Clear sauces

Useful for glossy, transparent sauces — but it can thin if held over heat too long or boiled hard, and curdles with dairy.

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No. 03

Amazon

Tapioca starch

Fruit fillings

Adds glossy body and elasticity to fruit fillings, sauces, and some gluten-free bakes; freezes and reheats more cleanly than cornstarch.

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No. 04

Amazon

Potato starch

High-thickening power

Strong thickening per gram and useful for gluten-free frying coatings; keep heat moderate to avoid a gummy mouthfeel.

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No. 05

King Arthur Baking

Instant ClearJel

Pie filling

A modified cornstarch that thickens without heat, holds up to canning and freezing, and keeps fruit fillings sliceable instead of runny.

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No. 06

Amazon

Rice starch

Delicate texture

A mild starch for smooth, custardy sauces and some gluten-free baking blends — gentler texture than cornstarch.

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No. 07

Amazon

Kuzu starch

Traditional glossy thickening

A traditional Japanese starch for clean, glossy gentle sauces and macrobiotic-style cooking; pricier than cornstarch but very smooth.

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No. 08

Amazon

Instant tapioca

Rustic fruit pies

Pre-cooked tapioca pearls for fruit filling — gives a glossy set without grinding, but leaves visible specks compared to tapioca starch.

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Cook's guide

  • Cornstarch is the neutral default for quick sauces and stir-fry glazes.
  • Arrowroot can thin if boiled hard or held too long.
  • Tapioca starch gives glossy elasticity that is useful in fruit fillings but odd in some gravies.