Recipe cake "Napoléon" Pastry: Mix eggs, soft butter and sour cream together till they blend well. In a table spoon, dissolve baking soda in vinegar - you will see "bubbles". Start adding flour, cup-by-cup, make soft smooth dough. Split dough into 16 pieces, form little balls. Cover the dough with plastic, and put in the fridge to chill. While it's chilling, prepare cream. Cream: Pour 1 1/2 quarts of milk into thick bottom pot and bring it to boil. While the milk is warming up, prepare the cream mix: Separate egg yolks and stir them very well with sugar and a pinch of salt - until mix turns very light yellow. Add flour, mix well. Add 1 cup cold milk, mix very well. Pour the cream mixture into boiling milk very slowly, using a whisk to stir the cream.. When it starts boiling, you will see it become thicker. Let it simmer for 2-3 minutes, don't forget to stir at all times. Remove from the stove, add butter and mix it in as it melts. Set aside. Preheat oven to 180°
