Let the dough thaw overnight in the refrigerator. Cut the loar into 9-12 pieces. Roll into ropes and pinch the ends together to form a circle. Preheat the oven to 350F. Drop bagels into the boiling water, cooking one minute per side. Life out with a slotted spoon and place on a greased cookie sheet. Brush with a mixture of egg yolk and water. Bake for 30 minutes or until golden brown.