The John Collins is believed to have originated with a headwaiter of that name who worked at Limmer's Old House in Conduit Street in Mayfair, which was a popular London hotel and coffee house around 1790–1817.
Fill a Collins or highball glass with ice.
Add all liquid ingredients and gently stir.
Garnish with lemon wheel and maraschino cherry.
Add a dash of aromatic bitters.