Mix the flour, baking powder, baking soda and pudding powder together. In a bowl, stir the eggs with the sugar until frothy. Add oil, milk and yogurt and mix well. Mix in the flour mixture so that no lumps form. Finally fold in the chocolate drops. Let the dough rest for about 5 - 10 minutes. Then fill into molds and bake in the preheated oven at 170 ° C with fan-assisted air for about 20 minutes.