⭐ Arrowroot Powder (Best Fat-Free Option)
1:1 (use equal amount as cornstarch)Arrowroot powder is a fine starch extracted from tropical plants and acts as an excellent thickener and moisture binder, much like cornstarch. It gelatinizes at a lower temperature and provides a smooth texture, helping to stabilize the batter and improve crumb tenderness.
When using arrowroot, mix it thoroughly with dry ingredients to avoid clumping. It is best added towards the end of mixing to preserve its thickening properties. Avoid overheating the batter as arrowroot can break down under prolonged heat.
Compared to cornstarch, arrowroot yields a similarly soft and moist crumb with a slightly more glossy appearance, which complements the moist, velvety texture expected in Red Velvet Cake.