Cilantro Butter Sauce

Boil wine with shallot in a medium non-reactive saucepan until reduced to 1/3 cup. Stir in cream and boil until reduced by about half. Working over very low heat, whisk in the butter, 1 tablespoon at a time, until sauce is light and thick. Do not allow sauce to boil at any time or it will separate. Strain sauce through a fine wire mesh strainer into a warm bowl. Stir in cilantro, salt and pepper. Keep warm by covering tightly with plastic wrap and then placing bowl in a pan of warm water.