For a batch of four, combine 6 oz cream, 6 oz bourbon, 3 oz Faretti chocolate liqueur, 2 oz simple syrup and 1 oz crème de menthe in a mason jar. Add ice and shake briskly for 30 seconds. Strain into chilled martini or coupe glasses and top with a mint leaf or a chocolate mint cookie. If you’re not serving all 4 at once, strain out the ice so the cocktail doesn’t overdilute while you sip on the first couple. Keep in the fridge until ready to continue to serve.