1 1/2 oz of Vodka
1/2 oz of creme de cacao (or chocolate liqueur)
1/4 oz of Hazelnut Liqueur
1/3 oz of Limoncello (or lemon liqueur)
1/2 oz of Lemon Juice
1/2 oz of Vanilla Syrup
1 twist of lemon peel
Pour ingredients into shaker, shake well with ice, strain into martini glass, and garnish with lemon peel