5 egg yolks

2/3 cups sugar

1 cup half and half

2 tablespoons butter

1 cup whipping cream

2 teaspoons vanilla extract

Beat yolks and sugar until blended. Pour in top of double boiler. Stir in half and half. Cook and stir over boiling water until thickens. Set aside – stir in butter. While cooling on a rack, stir occasionally until room temperature. Stir in whipping cream and vanilla. Freeze according to manufacturers directions.