Prep: 10 min, Cook: 35 min

3/4 cup cake flour
2/3 cup sugar
1/3 cup cocoa powder, European style if available
1/3 cup cornstarch
1 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt (necessary)
1 egg white
1/2 cup evaporated skim...