Citrus Surprise Grapefruit Cake
This recipe first appeared in our King Arthur Flour Whole Grain Baking book in 2006. Pairing whole wheat and citrus makes for an excellent combination. The whole wheat's sweetness is brought out by the tang of the citrus; and the earthy flavor of the wheat marries well with that of grapefruit. Using oil and egg whites makes for a very light cake that holds its structure well with nary a sign of heaviness from the whole grains.