Dip the rim of a martini glass into chocolate syrup, then into the crushed graham crackers. Chill glass in freezer until ready to use
Spear the marshmallow with the cocktail straw then coat in chocolate syrup and graham cracker crumbs, set aside
Pour all the liquid ingredients into a shaker with ice, and shake until well mixed.
Pour mix from shake into glass and sprinke with a pinch of graham cracker crumbs. Garnish with the marhsmellow straw and serve.
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