食材: * 250g All-purpose flour 中筋面粉 1 cup+1/2 cup * 120g Milk 牛奶 1/2cup * 30g Sugar 糖 1/8cup * 2g Salt 盐 1/4 tsp * 3g Instant yeast 酵母 1 tsp * 1pcs Egg 鸡蛋(55g) * 30g Unsalted butter 无盐黄油 1oz * Oil 油 * Custer Sugar 白砂糖 The temperature of oil for rying donuts(160°C(320℉)) 甜甜圈油炸温度(160°C(320℉))