For the compote, clean and wash the rhubarb and cut it into pieces of about 2 cm. Bring the cherry nectar to the boil and steam the rhubarb for about 5 minutes. Stir in 150 g sugar. Stir pudding powder and 100 ml water until smooth.
Bind the compote with it and bring to the boil briefly. Pour into a bowl and let it cool down. For the waffles, mix the fat, 250 g sugar, vanillin sugar and salt with the whisk of the hand mixer until creamy.
Stir in the eggs one by one. Mix flour and baking powder. Alternate with the sour cream and stir into the dough. Heat the waffle iron and spread with oil. Bake approx. 14 waffles from the dough one after the other.
Dust with icing sugar and serve with the rhubarb compote.