This is one of the most ostentatious versions of a martini and was invented in London.

Cut two passion fruits in half. Scoop the contents out of two halves and add to a cocktail shaker half-filled with ice, then top up with 10ml each of passion fruit liqueur, vanilla-flavoured syrup and freshly squeezed lime juice.

Top this up with 50ml chilled vanilla vodka and shake vigorously to mix. Strain the contents into a martini glass, garnish with half of the remaining passion fruit floating cut-side up, and the other half on the side.

Serve with a chilled, tall shot glass of champagne as a chaser and sip from each glass in turn.