Heat oven to 190C/375F. Grease and flour a 8-inch bunt pan. Whisk together flour, baking powder and salt. Cream together sugar, shortening and egg. Mix in sourdough starter.

• 烤箱预热到190C/375F。8寸中空模抹油洒粉。面粉，烤粉和盐混合均匀。砂糖，白油和鸡蛋打匀，加入酸酵。