Drain the cherries. Preheat the oven (top / bottom heat: 175 ° C, fan oven: 150 ° C).
Mix the margarine, sugar and salt with a hand mixer until creamy, gradually add the eggs and stir in. Mix the flour with baking powder and stir in alternately with the 250 ml egg liqueur. Finally fold in the chocolate flakes. Place the dough on a greased baking sheet sprinkled with breadcrumbs and smooth it out. Spread the cherries on top. Put in the hot oven and bake on the middle rack for about 50 to 55 minutes. Let cool down.
Whip the cream with the vanilla sugar and cream stiffener until stiff. Carefully fold in the sour cream. Pour the cream and sour cream mixture onto the cake and smooth it out. Sprinkle with eggnog as a decoration and apply chocolate decoration if necessary. Chill the cake for at least 1 hour until ready to eat.
Also suitable for consumption the next day.
Tip: To reduce fat, a third of the amount of fat can be replaced with low-fat quark.