PREPARATION:
- Make a pumpkin simple syrup by combining pumpkin puree with brown sugar, cinnamon stick, nutmeg, and water in a saucepan over low heat.
- Stir constantly for 20 to 30 minutes, until cinnamon flavor is present and mixture is smooth. Remove from heat and cool. The Simple syrup should have the consistency of a thin smoothie.
- Pass the thick syrup through a fine mesh sieve (or a strainer), using the back of a spoon and discard the pumpkin pulp.
- Prep margarita glasses by combining sugar, allspice, and salt and pouring the mixture onto a small plate. Run a wedge of lime around the rim of each margarita glass, and then dip the glass rim into spiced sugar.
- For each margarita, combine the juice of half a lime, tequila, Cointreau, and 2 oz pumpkin simple syrup. Shake well and serve on the rocks.
