鬆軟香甜的低糖健康蒸紫薯蛋糕，非常好吃。 Soft and light sweet healthy delicious steamed purple sweet potato cake.

Ingredients 準備材料: - Purple sweet potato mash 紫薯泥 50g - Coconut milk 椰漿 100g + 20g - Corn oil 玉米油 20g - Egg yolks 蛋黃 3 pcs - Low-gluten flour 低筋麵粉 70g - Purple sweet potato powder 紫薯粉 10g - Egg white 蛋白 3 pcs - White vinegar few drops 白醋幾滴 - Caster sugar 細砂糖 40g

蛋糕模 Cake mould (6-inches)

Steam 50 minutes over medium heat. 中火蒸五十分鐘。