For the orange peel garnish, use a channel knife to cut a long strip of orange peel. (Or, use a vegetable peeler to make a long strip, and straighten the edges with a paring knife.)
Curl the orange peel strip around the handle of a bar spoon or a chopstick, and set it aside while you make the drink.
Add the lime juice, allspice dram, Angostura bitters, maple syrup, and bourbon to a cocktail shaker.
Fill the shaker with ice.
Seal it up and give everything a good shake, about 15-20 times.
Strain the drink into your serving glass. If you have a fine mesh strainer, use both the regular strainer and the fine mesh strainer together.
Add the orange peel garnish to the side of the glass, and serve. Cheers!