⭐ Oat Flour (Best Vegan Option)
1:1 substitution (1 cup oat flour for 1 cup cake flour) Quick tip: Oat flour adds mild sweetness and can slightly thicken the mousse, affecting lightness.
Oat flour is lower in protein than all-purpose flour but higher than cake flour, and contains soluble fiber which can thicken mixtures. In chocolate mousse, this can lead to a slightly denser texture and a subtle oat flavor.
Use finely ground oat flour and incorporate gently to maintain mousse aeration. It works best in recipes where a slightly thicker mousse is acceptable.
The mousse will be less airy and more custard-like, with a mild oat taste that may complement the chocolate.