Rote Grütze mit Vanillesauce

Rote Grütze belongs to the northern summer table, strongest in Schleswig-Holstein, Hamburg, Mecklenburg, and across the Danish line, where the same family shows up as rødgrød. I cook it when red currants are sharp, raspberries are soft, and sour cherries have enough bite to stop the bowl becoming jam. It can be dessert after Sunday lunch, or a weeknight bowl with Vanillesauce, vanilla custard sauce; the old Armeleuteessen, poor people's meal, still knows how to feed you.

The north wants tart currants and a loose spoonable set. Further south, many cooks lean harder on cherries, strawberries, and starch until it behaves like pudding. Im Norden anders, im Süden anders. I won't thicken it into a red wall. The fruit should move when the spoon goes in.

The decision is when the starch meets the pot. Stir potato starch into cold juice first, then boil it briefly until clear and glossy before the tender berries go in; dry starch thrown into hot fruit clumps, and long boiling turns raspberries to seed and dulls the red. Runter mit der Temperatur, fold the soft fruit through, then stop. Erst verstehen, dann kochen.

Vanillesauce is milk, yolks, and a vanilla pod. Not powder. Heat it only until it coats a spoon because egg thickens before a boil, and a boil gives you sweet scrambled egg. That is a punishment, not dessert.