Potato Starch Substitute for Cornstarch: Exact Ratio
Looking for a cornstarch substitute? Potato Starch works as a direct replacement. Use 1 tbsp potato starch per 1 tbsp cornstarch in any recipe that calls for cornstarch. This swap works best for soups, sauces, gravies.
Best Substitute
Potato Starch
1 tbsp potato starch per 1 tbsp cornstarch
Works 1:1 as a thickener. Add at the end of cooking and do not boil—it loses thickening power at high temperatures. Creates a light, silky texture.
Flavor & Texture Change
Very neutral flavor. Creates a light, silky texture. Excellent for frying (creates the crispiest coating). Sauces thickened with potato starch are clear and glossy.
When Not to Use
Breaks down at high temperatures and with prolonged cooking. Do not boil sauces thickened with potato starch or they will thin out. Add at the very end of cooking.
Tips When Replacing Cornstarch in Recipes
Always mix cornstarch or its substitutes with cold liquid before adding to hot liquids to prevent lumps. This is called a slurry. Most starch thickeners lose their power if overcooked or if the sauce is too acidic. Arrowroot is better for acidic sauces; flour is better for opaque gravies.
What Is Cornstarch and Why Substitute It?
A pure starch extracted from corn kernels, used primarily as a thickener for sauces, gravies, and pie fillings, and as a component in gluten-free baking.
Potato Starch is one of 5 alternatives you can use instead of cornstarch. For a complete list of cornstarch substitutes with ratios and cooking tips, visit the full cornstarch substitute page.
What Else Can I Use Instead of Cornstarch?
Frequently Asked Questions
Can I use potato starch instead of cornstarch?
Yes, you can use potato starch as a substitute for cornstarch. Use 1 tbsp potato starch per 1 tbsp cornstarch. Works 1:1 as a thickener. Add at the end of cooking and do not boil—it loses thickening power at high temperatures. Creates a light, silky texture.
How much potato starch equals cornstarch?
Use 1 tbsp potato starch per 1 tbsp cornstarch to replace cornstarch with potato starch. Works best for soups, sauces, gravies.
What is the best substitute for cornstarch?
Potato Starch is a popular substitute for cornstarch. Use 1 tbsp potato starch per 1 tbsp cornstarch for a 1-to-1 replacement. See all 5 alternatives on our cornstarch substitute page.
Does potato starch change the taste when replacing cornstarch?
Breaks down at high temperatures and with prolonged cooking. Do not boil sauces thickened with potato starch or they will thin out. Add at the very end of cooking.
Is potato starch a vegan substitute for cornstarch?
Yes, potato starch is vegan and works as a plant-based alternative to cornstarch. Use 1 tbsp potato starch per 1 tbsp cornstarch.