Cream:
Add 150 g of sugar, 2 tbsp. of corn starch and 2 tbsp. of flour to 3 egg yolks, beat well, add 100 g of water or stand on low heat and bring to a boil (up to 80 °) Cool to room temperature and also to room temperature 250 g of butter at room temperature with a mixer, add already
cooled tablespoon and mix well.