中筋面粉 All purpose flour 210g 冷冻无盐黄油 Frozen unsalted butter 55g 砂糖 Sugar 50g 盐 1/4 tsp 泡打粉 Baking Powder 8g 鸡蛋 半个 Egg half 鲜奶 Milk 85g 果酱 Jam 烤箱预热170度,烤制22分钟 Bake in a preheated 170℃/338℉ oven for 22 minutes