Hurricane Coffee Cotton Sponge Cake 飓风咖啡棉花蛋糕

► Facebook Page: https://www.facebook.com/KathrineKwaB... ► Instagram:   / katherinekwa   ► Support my recipe book : Ingredients : 5 egg yolks (蛋黄) 1 whole egg (全蛋) 60g (3 tbsp) melted butter (融化牛油) 100ml milk (牛奶) 1 tbsp instant coffee powder (即溶咖啡粉) 1/4 tsp coffee essence (咖啡香精) 60g (1/2 cup) plain flour(普通面粉) 2 tbsp (20g ) corn starch (玉米粉) 5 egg whites (蛋白) 1/8 tsp salt(盐) 95g (1/3 cup + 1 tbsp) caster sugar (细砂糖) 1 1/2 tbsp chocolate powder or cocoa powder (巧克力粉或可可粉)