For the sugar cake, knead a yeast dough from spelt flour, margarine, milk, yeast, sugar, salt, one egg and one yolk and leave it covered to rise.
After 2 hours, knead the dough again, roll it out and brush it with the egg white. Sprinkle with cocoa and brown sugar, form a roll, brush with egg white and sprinkle with hail sugar. Bake at 160 degrees hot air for about 40 minutes. If the sugar cake becomes too dark, cover with foil.