• 10 white seedless grapes
• 1 teaspoon sugar syrup
• 45 ml (1½ fl oz) unoaked grappa
• 3 teaspoons dry Sherry (preferably fino)
• 2 teaspoons lemon juice
• 2 red grapes, for garnish

Place the white grapes and sugar syrup in a boston glass and muddle. Add the grappa, sherry and lemon juice. Add 1 cup of ice cubes and shake for 10 seconds. Double strain into a chilled martini glass. Skewer the red grapes onto a toothpick and garnish.