First dissolve the chocolate and let it cool down a little. Beat the butter with the sugar until creamy. Beat the eggs one by one. Now the chocolate.
Fold in the flour mixed with the baking powder and spread everything into the greased, crumbled loaf pan (25 cm). Bake at 175 ° C (convection) on the middle rack for about 45 minutes.
After cooling, the cake must be well wrapped in foil and then left in a cool place for 7 - 8 days. Then it can be covered with glaze at will.