Select the berries, wash and drain if necessary. Quarter the strawberries. Stir starch with 5 tablespoons of nectar until smooth. Boil up the rest of the nectar with 2 tablespoons of sugar. Add starch and bring to the boil while stirring. Simmer for about 2 minutes. Fold in the berries and let cool down.
For the dough, cream butter, 225 g sugar, vanilla sugar and 1 pinch of salt. Stir in the eggs one by one. Mix flour and baking powder, alternately stir in sour cream.
Heat a waffle iron, brush with oil. Put approx. 2 tbsp. of dough in the middle of each waffle iron, spread lightly. Bake about 8 waffles one after the other. Serve with red fruit jelly and possibly sour cream.