The main ingredients are butter, egg whites, sugar and water.

1. Whip the egg whites to dry peaks, dissolve the sugar in the water during the whipping process, and heat to about 125 degrees (the syrup will thicken and make a lot of tiny bubbles).

2, while hot, the syrup will be poured into the foaming egg whites, the egg whites will expand, stirring at medium speed, and when the temperature is reduced to near room temperature, the butter will be added in small batches to fully whipped can be.

3. Finally, add a little rum or brandy to taste. At room temperature it is softer and slightly lighter in color than butter, and at slightly lower temperatures it will harden and taste better.

4, another is egg whites whipped, and then rushed into the syrup with agar, white color, more crispy, time will produce a lot of voids, the texture is more crispy, but also some hard