2 c. all-purpose flour
1 1/2 c. sugar
3 tsp. baking powder
1 tsp. salt
1/2 c. vegetable oil
7 egg yolks
3/4 c. cold water
1 c. egg whites
1/2 tsp. cream of tartar
2 tbsp. orange rind

In large bowl stir together first 4 ingredients. Make a well in center and add in order: oil, egg yolks, cold water, and orange rind. Stir until smooth. Put egg whites and cream of tartar in large mixing bowl; beat with mixer or rotary beater until very stiff peaks are formed.

Gradually pour egg-yolk mixture over beaten egg whites, folding gently until blended. Pour into ungreased tube pan. Bake in preheated slow oven at 325 degrees 65-75 minutes or until springs back when touched. Invert pan over funnel until cool and take out of pan. Frost.