食材/ Ingredients 可做15個餐包/ Make 15pc rolls

415 g 中筋麵粉/ all-purpose flour 5 g高活性乾酵母/ instant yeast 30 g 砂糖/ sugar 9 g 鹽/ salt 260 g 溫牛奶/ warm milk 50 g 蛋/ egg 44 g無鹽黃油/ unsalted butter 1 大匙額外蛋液，刷表面/ extra egg wash to brush 入爐前/ before bake 1大匙額外融化黃油，刷表面/ extra melted butter to brush出爐後/ after bake