Mix all the ingredients in the bowl of an electric stand-mixer. Remember separate the yeast from salt and sugar to avoid the dehydration.

将材料放入搅拌缸。酵母不要和糖、盐放于一堆。以免造成酵母脱水。

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On the day of baking, dissolve the yeast in the water in the bowl of an electric mixer.

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For the sponge, using a rubber spatula, combine the 3 cups flour, yeast, milk, sugar, and soft butter in a mixer bowl or another large bowl.

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