1. Put butter, water, milk, salt, and sugar in a pot and heat until the butter is melted. Remove from the heat and add soft flour and mix. 2. Put on low heat and fry for about 1 minute until a thin film forms on the bottom, then transfer to another bowl and cool lightly. 3. Divide the eggs into 2 batches, mix, and place in a piping bag. 4. Pan in an oven pan, prepare the dough with water-soaked fingers, sprinkle with cocoa powder, and bake in an oven preheated to 180 degrees for 20 minutes. 5. Fill the shoe with chocolate cream, put the meringue, and heat it with a torch.