Mix the butter with a whisk and mix well, add the egg yolk in portions and mix well.
Add fresh milk and mix well
Pour the coconut and milk powder with a spatula and mix evenly
搓 into a small ball, code into the baking tray
The oven is preheated to 150 degrees, and the middle layer is baked for 20 minutes. (I baked for 30 minutes and it was a little bit sloppy. Everyone looked at the color of their own oven and tempered.)