2, tools: microwave oven, big bowl, mold cocoa powder, cocoa butter, (it is better to buy a piece, of course, if you buy powder. But if you buy cocoa powder, you have to buy butter.
3. Then find a steamer, drain the water and heat it. Then put the big bowl on the steamer.
4. Put the cocoa powder, cocoa butter and sugar into a bowl and keep stirring. Until the things in the bowl are mushy (sticky, dripping on the spoon, but not soon. Kind of like ketchup. You can't buy cocoa powder and cocoa butter, just buy chocolate balls that can be put in the oven. )
5. Add a little milk into the paste, then stir until it becomes sticky again, and naturally cool. Put the paste into the freezer and take it out after 5~ 10 minutes.
6. Heat again until it melts (remember to stir). At this time, you can also add some spices or sweeteners you like. Pour into the mold and cool naturally.