Melt the chocolate and butter in the pan - remove from the fire - stir in the sugar and vanity sugar - beat the eggs and stir in the cut walnuts with the flour and salt - put the whole thing in a springform pan lined with baking paper (important!) - and put in the Bake the stove 180 degrees for 30 - 45 minutes - let it cool down and peel off the baking paper - let it dry on both sides - cut into cubes - wonderful !!!