Pineapple Chaudeau Sauce

Put 1 cup pineapple juice or syrup in a saucepan; sweeten to taste; add ½ cup white wine and the yolks of 2 eggs; beat this over the fire with an egg beater till it foams and rises up; remove from the fire and mix it with the beaten whites of 2 eggs; serve with vanilla koch or souflée.