This is more or less an update on the classic daiquiri. The elderflower’s sweet, floral flavour is balanced by the mustard’s aroma and warmth, which creates a tingle on the tongue. Serves one.

20ml spiced rum (such as Sailor Jerry)

20ml Havana Club three-year-old rum

15ml lemon juice

15ml elderflower cordial

½ tsp readymade mustard – Colman’s, of course (or to taste)

Put everything in a cocktail shaker, add ice, shake and strain into a chilled martini glass or coupette.

• Jamie Jones, Temple and Sons, London EC2