<<Disclaimer: Verify this information before applying it to your situation.>>

From JOY OF COOKING (Irma S. Rimbauer & Marion Rombauer Becker):

"Rice flour makes a close but delicately textured cake in recipes heavy in
egg. To avoid graininess, mix the rice flour and the liquid in the recipe,
bring to a boil, and cool before mixing with other ingredients. Substitute
7/8 cup rice flour for 1 cup all-purpose flour."

I haven't experimented yet, but it sounds worth a try! If anyone else tries
it first, let us know if it really works!

Carma in Phoenix