- In a small saucepan over medium-high heat, add the lemon juice, Demerara sugar, and lavender flowers.
- Stir until sugar dissolves (about 5 minutes).
- Once the mixture is boiling, reduce heat and simmer for 10 minutes.
- Remove from heat and let sit for 20 minutes.
- Store your lemon-lavender simple syrup in a clean glass container for up to a month.