Buying guide
Cornstarch substitutes vary by job: crisp coatings, glossy sauces, fruit fillings, and custards each need a different fallback.
No. 01
AmazonClear sauces
Gels at ~165–185 °F (lower than cornstarch's ~195 °F) into a clear, glossy sauce — but breaks down with prolonged simmering and turns slimy with dairy. Use ~2 tsp per 1 Tbsp cornstarch in stir-fry sauces, fruit glazes, and clear vinaigrettes finished off the heat.
View merchant pageNo. 02
AmazonFruit pies
Glossy, elastic gel that holds up to acid and freeze-thaw — the standard pie-filling thickener for cherry, blueberry, and peach. Use ~2 Tbsp per 1 Tbsp cornstarch in fruit fillings, ~1 Tbsp per 1 Tbsp for sauces. Avoid in dairy sauces, where it turns stringy.
View merchant pageNo. 03
AmazonCrisp coatings
Roughly 2× cornstarch's thickening power — a strong choice for crispy fried coatings (Korean fried chicken, latke binders) and quick stovetop thickening. Add at the end and don't hold over high heat; extended simmering breaks the gel and turns sauces gummy or watery.
View merchant pageNo. 04
AmazonDredging
About half cornstarch's thickening power but adds a fine crisp coating to fried fish, tempura, and dredged tofu. Use 1.5–2× cornstarch when thickening sauces; expect a slightly opaque finish rather than the glassy clarity of arrowroot or tapioca.
View merchant pageNo. 05
King Arthur BakingPie filling
Pre-gelatinized modified cornstarch from King Arthur — thickens cold without cooking, is freeze-thaw stable, and is the only USDA-recommended starch for canning fruit pie fillings. Use ~1.5× cornstarch by volume; choose Instant ClearJel for raw fillings, regular ClearJel for fillings that will be cooked.
View merchant pageNo. 06
AmazonNon-gluten-free roux
Use ~2 Tbsp flour per 1 Tbsp cornstarch — but flour must be cooked at least 2–3 minutes (roux stage) to lose raw taste, and is not gluten-free. Best for opaque gravies and pan sauces where a matte finish is acceptable; avoid for clear glazes or pie fillings.
View merchant pageNo. 07
AmazonGlossy gentle sauces
Traditional Japanese kudzu-root starch — sets into a glossy, clean gel similar to arrowroot but more stable, common in macrobiotic cooking and Japanese kuzumochi. Costs 5–10× cornstarch by weight; reserve for dipping sauces and clear soups where the silky mouthfeel matters.
View merchant pageNo. 08
AmazonRustic filling
Pre-cooked tapioca pearls (Minute-Tapioca-style) — a 1:1 cornstarch volume swap in fruit cobblers and rustic pies, but the pearls remain visible after baking. Pulse in a spice grinder for a smoother filling, or skip in tarts where appearance matters.
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