Beat egg yolks and sugar until well blended. Pour mixture into the top of a double boiler over simmering water, and stir in half-and-half. Cook until thickened; if necessary, microwave for 1 minute or until mixture thickens. Remove from heat and cool. Stir in whipping cream and vanilla, and then pour into the bowl of an ice cream freezer. Process according to manufacturer's instructions until firm.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Suzanne Corbett, Levee Mercantile, St. Louis, MO