easy & yummy
Add sugar, water, and basil leaves to a saucepan and bring to a simmer over medium heat. Stir continuously until sugar is dissolved, about 5 minutes.
Remove from heat and let syrup cool in pan for 1 hour. Strain basil leaves from syrup. Set aside while you make the lemonade.
Combine lemon juice, 5 cups of water, and the simple syrup in a large pitcher. Stir to combine.
To serve, add ice cubes, lemon slices, and 1/2 a basil sprig to a glass and fill with lemonade.