You will need:
Trust me on the basil for this, it gives the drink a really interesting flavour; sort of floral and quite earthy. I made this quite strong as I prefer a mouth puckering, not too sweet lemonade but you could add more or less sugar and juice to suit your taste. I have made this with flat water but I do think that the sparkling is slightly better. It’s really refreshing and ideal for a warm evening but I will definitely make it later on in the year as a citrus pick-me-up.