Botanist Rosemary Lemon & Tonic Mon, Aug 22, 22 Botanist Rosemary Lemon & Tonic The Seasonal Twist – Rosemary Lemon Botanist & Tonic 2oz The Botanist Gin 1 Lemon, Halved 2-3 Rosemary Sprigs 1/2 oz Agave Syrup 4 oz Tonic Muddle lemon, rosemary, and agave syrup in a highball glass. Add The Botanist Gin, ice, and top with tonic. Garnish with a sprig of rosemary.