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This tutorial video is done using an iphone with one hand filming and taking photos while working with the other. Recipe (中英食谱)can be found here: http://www.bakingtaitai.com/2014/05/magic-custard-cake.html
Truly a magical cake, one batter that bakes into 3 different layers of texture! 单单一种面糊就能烘焙出三层不同质感的蛋糕,它就是魔术卡士达蛋糕了!这么神奇的蛋糕,非试不可哦!