1 ounce gin
1/2 ounce brandy
1/2 ounce dry vermouth
1/2 ounce sweet vermouth
1 dash orange bitters
Garnish: Lemon twist
Stir with ice. Strain into a cocktail glass.

The Delmonico Cocktail is named after what is considered to be the first restaurant opened in the United States. First opened in 1827, Delmonico's has suffered through fire, prohibition and a series of proprietors and still serves its famous steaks today. The eponymous cocktail is just as strong and long lived as the restaurant.