Sift together the flour, cornstarch and cocoa powder in a bowl. Grease a26 cm heart-shape spring form. Preheat the oven to175 C/350 F.

• 面粉，淀粉和可可粉混合过筛到一个盆里。准备一个26厘米的心型蛋糕模。预热烤箱到175C/50F。