Place basil leaves and 6 lime slices into a large pitcher or bowl. Use a muddler to crush the basil and lime to release basil oils and lime juice.
Add the rest of the lime slices and sugar. Muddle again just to release lime juice.
Add sliced strawberries and muddle just until crushed slightly and juices start releasing.
Mix in liquid ingredients. (Do not strain the mixture) Serve over ice. Enjoy!