Put the flour in a bowl and make a well. Crumble the yeast and place in the well, as well as 2 tablespoons of sugar and the lukewarm milk. Let rise for about 15 minutes.
Mix the mixture with the eggs, butter, rum, salt and the remaining sugar. If necessary, add more lukewarm milk until the dough is very moist and smooth. Cover and let rise for at least half an hour.
Stir the dough again and pour it into greased muffin molds, about two tablespoons per mold and let rise for another 15 minutes. Preheat the oven to 180 ° C or 160 ° C with circulating air.
Mix egg yolks with milk and brush onto the muffins and decorate them with almonds, sugar or poppy seeds as desired. Then bake for 15 minutes. Then let rest in the molds for another 5 minutes.
Tip: Rum raisins in the batter taste very tasty and if you put some water on the bottom of the oven when the muffins are baked, they will be particularly tender and airy.