I’ve always held that a cocktail needs to be three or more ingredients, with just two being a mixed drink. Just because something has a name -say a Screwdriver consisting of vodka and orange, a cocktail it does not make (according to me).
That said I don’t think cocktails need to be alcoholic, a Virgin Mojito or Mary can be a very lovely thing. Nor do they need to be fancy. The horror of a Club Tropicana style confection with coloured layers and all manner of paraphernalia. Bleugh. Give me an Old Fashioned any day. Ostensibly this only has one ingredient of note -Bourbon (Woodford Reserve would be my go-to). But careful layers are built up. First muddling a maraschino cherry and strip of orange peel and discarding them to leave only the trace syrup. Then a sugar cube soaked with bitters pounded down to slush ready for the liquor. Bourbon and ice cubes are then added gradually, all the time being gently stirred to release the aromas and dissolve the sugar. This process can take several minutes -yes, that’s why the bartender’s shoulders slump when you order four.