Combine Ube taro powder with 1/3 of the batter and return this taro batter to the plain batter.Then, with the end of a wooden spoon, gently draw swirls through the batter to marbleize it.

• 取1/3拌好的蛋糕糊和紫芋粉拌匀，然后再将其加入蛋糕糊中，用橡皮刀轻轻划两三下即成。