Cut the butter into cubes and grind with sugar.
Add eggs and mix well.
Add flour and slaked soda with lemon juice. Mix well.
Put the dough into molds.
From above, drown 3-4 cranberries in the dough.
Bake in an oven preheated to 180 degrees C for 20 minutes. Put the prepared muffins out of the molds and cool.
Sprinkle with powdered sugar.