Vincenzi Limoncello Ultra Lemon Drop Martini

1.Pour into a Cocktail Shaker with ice:
2.1 ½ ounces of Vincenzi Limoncello Di Torino
3.2 ounces of Vodka
4.Shake until chilled
5.Into chilled martini glass squeeze the juice of a lemon wedge
6.Pour in the contents of the shaker
7.Top with a splash of San Pellegrino Limonata
8.Garnish with a lemon slice