Dough recipe:
4 medium eggs
160 g butter,
160 grams of sugar (30 g for egg whites, 130 g for egg yolks),
25 g sour cream (15%),
3.5-4 grams of baking powder,
a pinch of salt,
180 grams of flour,
1 packet vanilla sugar.
Fill:
200 g sour cream (15%),
75 grams of sugar,
1 egg
12 grams of starch.

70 grams of berries.
Baking temperature: 180 degrees,
Baking time: 45 minutes.