Combine rosemary, grapefruit peel, sugar and 1/2 cup water in a small saucepan, and bring to a simmer over medium heat. Cook, stirring frequently, until sugar is completely dissolved. Let cool to room temperature. Strain syrup through a fine-mesh strainer and refrigerate until cold before using. Syrup can be made in advance and refrigerated in an airtight container for up to 1 week.
Other flavor ideas: -fresh ginger -fresh sage, thyme or mint -cinnamon stick -vanilla bean -cardamom pods or star anise -dried culinary hibiscus or lavender -jasmine tea -peppercorns or dried chile peppers
Per Serving: Serving size: about 1 teaspoon, 15 calories (0 from fat), 4g carbohydrates.
Note: We've provided special diet and nutritional information for educational purposes. But remember — we're cooks, not doctors! You should follow the advice of your health-care provider. And since product formulations change, check product labels for the most recent ingredient information. See our Terms of Service.