Spirits & Spice Holiday Martini

Build the following in a shaker:

1 oz. Spirits & Spice Armagnac XO 25 year
¾ oz. Spirits & Spice Chocolate Hazelnut
½ oz. Spirits & Spice Vanilla Cream Liquor
½ oz. simple syrup

Shake and strain into a martini glass. Garnish with ground chocolate.