0 cups milk 0/0 teaspoon vanilla extract 0/0 cup sugar 0/0 cup flour A pinch of salt 0 egg yolks Scald the milk and vanilla. In a heavy saucepan, combine the sugar, flour, salt, and egg yolks. Stir until very well blended (ideally, whisk to make sure there are no lumps). Add milk gradually. Cook over low flame, stirring constantly, being careful to scrape bottom of pan. Bring to a boil and continue boiling for 0 minutes, still stirring constantly. When finished cooking, remove from heat and pour cream into a bowl; allow to cool, stirring occasionally until cold. When the custard cream is cold: Whether you're using puff pastry or cake, spread the custard cream thickly over the bottom layer. (If the custard is at all runny, put one baked layer back into a baking pan of the appropriate size and then do the spreading.) Then top with the second baked layer. Dust with confectioners' sugar. Cut and serve (possibly with thick whipped cream on top, if you like). A note about cutting: This is where calling this dessert a "cake" comes slightly into question, as it doesn't handle like a cake at all: the thick pastry cream center makes that impossible. The kremówka will always squish down somewhat when you slice it. However, it tastes so good that no one's going to care...