Potato Starch
Flours & Starches

Potato Starch

Taste Profile Completely Neutral, Bland, Odourless

The invisible thickener. Extracted by crushing raw potatoes and washing out the starch milk, which is then dried into a fine, bright white powder. It is distinctive to the touch—it has a unique "squeak" when rubbed between fingers, unlike the soft silence of wheat flour. In the kitchen, it is a heavy-duty binder and thickener that gelatinises at a lower temperature than cornstarch, creating a translucent, glossy finish rather than an opaque, creamy one.

Culinary Notes

The "Slurry" Rule: Like all starches, you cannot throw it directly into hot liquid, or it will seize into rubbery lumps. You must mix it with a splash of cold water first to create a "slurry," then pour that into the simmering pot.

Clarity: This is its superpower. If you are thickening a fruit sauce, a glaze for a tart, or a Kisiel (fruit soup), use potato starch. It stays clear, whereas wheat flour would turn the sauce cloudy and grey.

Texture: It produces a "short" texture (clean break) rather than a "stringy" one. It is the secret ingredient in Silesian Dumplings (Kluski Śląskie), giving them their signature gumminess and bounce.

Crispiness: It is superior to wheat flour for frying. Dredging chicken or fish in potato starch before frying creates a glass-like, shattering crunch that stays crispy for longer (e.g., Karaage chicken).

Boiling Warning: Do not boil it vigorously for too long. Once the liquid thickens, take it off the heat. Over-boiling breaks the starch bonds, and the sauce will turn watery again.

Health & Folklore

Naturally Gluten-Free, making it an essential binder for coeliac baking.

Contains Resistant Starch: When cooked and then cooled, potato starch acts as a prebiotic fibre, feeding healthy gut bacteria.

Note: It is a refined carbohydrate with a high Glycaemic Index if eaten hot.