Source: Recipes for Mixed Drinks page: 8
1/2 sherry wine
Ingredient: sherry wineWhat it is: Sherry
Fortified wine made from white grapes that are grown near the town of Jerez, Spain. In Spanish, it is called vino de Jerez. Typically dry, "fino" sherry when only the generic name is used.
1/2 Italian vermouth
1 dash Angostura bitters
Ingredient: Angostura bittersWhat it is: Bitters
Shake well with cracked ice, strain and serve.