London subterranean speakeasy Happiness Forgets was our go-to for festive cocktails, obliging us with a spin on a Tom and Jerry (the milky-looking one) and a Mikey Rivers (the cloudy-looking version).

‘Born in Sweden. Raised in LA’ is the tagline for Pomello, a newly launched aperitif that is set to take the summer by storm. The two places might seem a strange reference point for a cocktail, but ...