Johnson Equal-Parts Manhattan (1900)

A generous share of wine

Johnson's ingredient lines call for half a wineglass each of whiskey and vermouth. Our adaptation selects rye and sweet vermouth, with 30 ml of each keeping the equal balance at a practical size. We retain the stirred, strained service and lemon-oil finish, using a chilled coupe and discarding the expressed peel.

Sweet vermouth is fortified wine flavored with botanicals. It brings sweetness, wine and a mixture of bitter and aromatic notes; the precise character varies by producer. In a drink with as much vermouth as whiskey, that choice deserves attention. Dry vermouth would produce a different drink even at the same 30:30 ratio, so check the style as well as the brand when choosing a bottle.

Rye gives readers a specific whiskey choice for repeating the recipe. Different rye whiskies have different proofs and flavor profiles, just as vermouths differ. Keep the same bottles while exploring the proportions and you'll have a clearer idea of what the larger share of wine contributes.

The ingredients a ratio leaves out

Gum syrup, sometimes labeled gomme syrup, is a sweetening syrup made with gum arabic. Johnson calls for only one or two dashes, and his warning to add it carefully is worth respecting. The syrup supplies sweetness alongside the vermouth. Orange bitters add a concentrated citrus and bitter accent in the same small-measure range.

The optional curaçao or absinthe is a choice between distinct flavors. Curaçao is an orange liqueur; absinthe supplies an anise-led herbal accent. Choose the one that interests you, or leave the optional dash out. Lemon peel adds its fragrant oils to the surface, giving the nose a citrus note before the first sip.

Reading a contemporary comparison carefully

The International Bartenders Association's Manhattan specifies 50 ml rye whiskey and 20 ml sweet red vermouth, with a dash of Angostura bitters and a cocktail cherry. Its principal ratio is five to two, compared with Johnson's one to one. The bitters and garnish also change, while Johnson's syrup and optional flavoring aren't listed in that specification.

Start here when the equal share of vermouth and the orange-bitters accent interest you. For a later adjustment, decide whether you want to change the whiskey-to-vermouth balance, the sweetness or the aromatic accent. They are separate controls, even when the change occupies only a few drops. Our guide to cocktail ratios through time follows that distinction through the Martini, Manhattan and Picador.