โญ Tapioca Starch (Best Nut-Free Option)
1:1 by volume (1 tablespoon arrowroot = 1 tablespoon tapioca starch)Tapioca starch is chemically similar to arrowroot powder, both being pure starches that gelatinize at similar temperatures, making it an excellent thickener and binder in pasta dough. It helps create a tender yet elastic texture without adding heaviness.
When substituting, use the same volume as arrowroot powder. Be cautious not to overwork the dough as tapioca starch can become sticky if hydrated excessively.
The final pasta will have a comparable chew and shine, making tapioca starch the closest match to arrowroot powder in pasta applications.