Move over espresso martini, the Irish are coming to town – well, it is St Patrick’s Day, after all. This drink is a bit like a Gaelic coffee, but cold, refreshing and devilishly moreish. There’s warmth from triple-casked whiskey, pick-me-up credentials from coffee and velvety balance from the caramel. Serve as an aperitif or digestif: this bestseller from our cocktail list works at any time of day – and especially today, of all days.

Serves 1

50ml Irish whiskey – I use Slane

15ml Kahlúa

10ml caramel syrup – the kind you get in coffee bars (or maple syrup)

75ml espresso – cold-brew works best

3 coffee beans, to garnish

Pour everything into a cocktail shaker, load it up with ice and shake hard. Double strain over ice cubes into a rocks glass, garnish with the coffee beans and serve.

• Kieran Monteiro, Boma restaurants, London