Place hot chocolate mix on a small plate . Rub lemon wedge around the rims of 2 chilled martini glasses. Dip the rims of the glasses into the hot chocolate mix.
In a cocktail shaker filled with ice, combine espresso, vodka, Rumchata and coffee liqueur.
Shake well and strain into prepared martini glasses.
Recipe by Allons-Eat! at https://www.allonseat.com/espresso-rumchata-martini/