A perfect martini uses equal amounts of sweet and dry vermouth. They also produce Rosso, Bianco and Extra Dry vermouth. A well known gin cocktail is the martini, traditionally made with gin and dry vermouth. A "dry" Rob Roy is made by replacing the sweet vermouth with dry vermouth. A "perfect" Rob Roy is made with equal parts sweet and dry vermouth. The vast bulk of Noilly Prat wine is the Original French Dry vermouth. A Cooperstown Cocktail is a cocktail containing gin, dry vermouth, and sweet vermouth.