Tools: microwave oven, large bowl, mold cocoa powder, cocoa butter, (it is better to buy a block, of course, if you buy a powder. But if you buy powdered cocoa, you have to buy butter.)
method of work
1: Find a steamer, drain water and heat it. Then put the big bowl on the steamer.
2: Put cocoa powder, cocoa butter and sugar in a bowl and keep stirring. Until the things in the bowl are mushy (sticky, dripping on the spoon, but not quickly. Kind of like pouring tomato sauce)
3: Add a small amount of milk and pour 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.
4: Reheat until it melts (remember to stir). At this time, you can also add some spices or sweeteners you like. Pouring into a mold, and naturally cooling.