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.