Combine all ingredients except the hibiscus syrup in a cocktail shaker with ice. Shake for 8-10 seconds and strain over crushed ice into a collins glass. Float hibiscus syrup on top and garnish with beautyberry cluster. If you can’t find beautyberries (native to Texas), garnish with a lemon wheel.
American beautyberry grows in rich woods and thickets in Central and East Texas, especially in the coastal plain pinelands. It has clusters of beautiful purple berries clinging to the branches in late summer through fall.