Warm the oven to 325 degrees F. Butter a cake form (9x5x3 inches) and dust the inside with bread crumbs.
Mix all dry ingredients, ground cloves until ground cardamom.
Melt butter.
Beat egg whites stiff.
Peel red plums and cut the fruits around the pit in quarters and then the quarters in halves.
Whisk milk and egg yolk and add melted butter.
Add milk mixture to dry ingredients and mix well. Add egg white and fold these into the batter. Don't overmix, but make sure you have no white clouds of egg white.
Pour half of batter in the cake form. Place red plum pieces on top and cover with other half of batter.
Place cake form in oven and bake 1 hour and 15 minutes.