- In a ramekin or other small bowl, combine the sweetener and boiling water and stir until dissolved. Stir in the lemon juice, then reserve the simple syrup.
- Fill a highball glass with the crushed ice.
- In a cocktail shaker, muddle 1 sprig of rosemary with 3 of the blackberries. Add the simple syrup, Square One Botanical, and a scoop of ice. Shake, then strain into the prepared glass. Spear the remaining 2 blackberries with the remaining rosemary sprig and add it to the glass to garnish. Enjoy!
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