A homemade simple syrup fragrant with delicate rose petals is an easy way to elevate cocktail hour. Find dried rose petals online, or in the bulk herb section of well-stocked supermarkets and natural-foods stores.
To prepare simple syrup: Combine sugar and water in a small saucepan. Bring to a boil over high heat. Cook, stirring, until the sugar is dissolved, about 1 minute. Remove from heat. Stir in flowers and let cool to room temperature, about 45 minutes. Strain (discard the flowers) and refrigerate for up to 1 month. (Makes 1-1 1/4 cups.)
To prepare mojito: Stir rum, lime juice, 1 ounce of the simple syrup and mint leaves in a tall glass. Add ice and club soda and stir again. Garnish with lime wedge, if desired.
To make ahead: Refrigerate simple syrup for up to 1 month.
1 other carb, 2 1/2 fat