Walnuts in hard shell — boil in water for for 5 minutes

Pastry:

2 eggs
100g sugar
1 pinch of salt
150g butter
100g sour cream (10%)
600g flour
1/2 teaspoon baking powder

Mix all ingredients in a bowl, make into a ball. Split and roll — use additional flour for rolling.

Filling:
1 egg white
100g sugar
120g walnuts

Whip egg whites, fold in sugar and walnuts.

Cut rolled pastry dough into wedges, add dollop of walnut mixture to large end, roll toward pointed end.

Brush with 1 egg yolk

Bake at 180℃ for 40 minutes

Dust with powdered sugar