Use 1 stalk of lemongrass to 1 bottle of Sotol. Muddle the lemongrass to release the oils and let it infuse overnight. Strain through a chinois or other fine-mesh strainer, and pour back into the bottle.
To make the cocktail, combine all ingredients in a shaker tin and give it a good, hard shake. Strain into a Collins glass filled with crushed ice. Garnish with toasted coconut chips and lime zest.
Makes 1 Cocktail