Wash the strawberries, then blend them until smooth.

Strain (optional) if you'd like a cleaner, seedless drink.

Add the lemon and lime juice, as well as the sweetener, then stir to combine.

Gently press the basil leaves (to release their aroma), then add them to the drink.

Pour in the water or sparkling water, then stir everything together.

Serving: Pour into glasses over ice, then garnish with fresh strawberries and basil leaves.