Mix buttermilk, vanillin sugar, lemon juice and 4-5 tablespoons sugar until the sugar is dissolved
Select and wash the raspberries and blackberries. Wash the currants and remove from the panicles. Wash, clean and halve the strawberries. Crumble the brown bread and mix with 1 tablespoon of sugar
Pour buttermilk into four deep plates. Add the berries and finally sprinkle with breadcrumbs. If necessary, decorate with lemon balm and serve immediately