Hungarian Keiffels
["4 c. sifted flour", "1/2 tsp. salt", "3 Tbsp. sugar", "1/2 lb. butter", "4 egg yolks", "3/4 c. sour cream", "1 cake yeast"]
["Crumble yeast in sour cream.", "Beat the egg yolks.", "Add cream, then mix with flour mixture.", "Knead ingredients to form a ball. Roll out in circles; fill with a nut filling.", "Bake 8 minutes in 350\u00b0 oven.", "Brush with egg yolk and return to oven to bake 10 minutes more."]
["flour", "salt", "sugar", "butter", "egg yolks", "sour cream", "cake yeast"]