Make a hollow place in the flour. Place the oil, melted butter, 2 eggs, water, salt and yeast into the flour. Knead thoroughly. Let stand 15 minutes.

Take a portion of the dough the size of an egg, roll it into a stick shape and bring the two ends together, forming a ring. Place the rings on a buttered baking pan. Brush with egg yolk and place in a warm oven until the "simits" become golden brown.

NOTE: The "simits" can be sprinkled with sesame seeds before being baked.