熬这种酱汁时应该不停地用木勺搅动。

This kind of sauce should be stired constantly with a wooden spoon.

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然后改用一只木勺，拌入脱脂奶和咖啡。

Using a wooden spoon, fold in the buttermilk and the coffee.

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然后改用一只木勺，拌入脱脂奶和咖啡。

Using a wooden spoon, fold in the buttermilk and the coffee.

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