求翻译：　　3、蛋黄，可可粉和白糖都放入一个大碗内，用打蛋器打到白糖完全融化，蛋糊液颜色变浅，体积大概会变成原来的1.5倍。是什么意思？

　　3, egg yolk, cocoa and sugar in a large bowl, beat the eggs hit the sugar fully melted, egg paste liquid color lightens, the volume will probably become a factor of 1.5 times times.