Put the flour, cocoa, salt, baking powder, and sugar in a bowl and stir everything well with a spoon. Then add butter (chop it up a bit beforehand) and eggs and stir everything with an electric mixer. Add the milk while stirring. When the batter is nice and creamy, you can add the dark chocolate to the batter. Then stir everything again with a spoon. Now you can set up molds and pour the batter into them. When you are done, you can bake your cupcakes at top / bottom heat and 180 degrees for 20-25 minutes, possibly longer or shorter, depending on the oven (make a stick test).
You can do the frosting while the cupcakes are baking. Chop the butter and warm the milk a little. Put the two things in a bowl, do not put the powdered sugar in until the butter has melted somewhat. When you have added the powdered sugar, you need to stir the mixture with a whisk. Color with the food coloring as desired. If the cream is too runny, put it a bit in the refrigerator or outside in cold weather. And - DON`T PANIC! the frosting becomes even firmer! When the frosting is set and the cupcakes are baked and cooled, you can put the frosting in a piping bag or in a plastic bag with a hole and squirt it on the cupcakes.
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