Potato Starch (Best Option)
1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)Potato starch has a similar thickening ability to cornstarch and is neutral in flavor, making it ideal for delicate desserts like cheesecake. It gelatinizes at a slightly lower temperature, ensuring smooth thickening without clumping.
When using potato starch, mix it thoroughly with dry ingredients before adding liquids to avoid lumps. Avoid overheating as it can break down and lose thickening power.
Compared to cornstarch, potato starch yields a slightly silkier texture but remains very close in mouthfeel and structural integrity, preserving the classic cheesecake consistency.