Zest the limes directly into a food processor or blender. Add the sugar and lime juice and blend until the sugar is dissolved. Blend in the milk and heavy cream.

• 将柠檬放到搅拌器内，加入白糖和柠檬汁搅拌到糖溶化为止。最后加入牛奶和奶油搅拌均匀即可，