Give your homemade lemonade an herbaceous boost with a rosemary simple syrup.
Make a rosemary simple syrup: Combine the sugar and 3/4 cup of the water in a small (1 quart) saucepan. Bring the water to a boil, stirring to help the sugar dissolve.
Once the sugar has all dissolved, remove the saucepan from the heat and let the syrup cool to room temperature.
Stir in the doTERRA Rosemary Essential Oil, then transfer it to a glass jar and refrigerate it until chilled.
Stir together the lemon juice, rosemary simple syrup, and remaining 5 1/4 cups of water in a pitcher.