Make syrup by adding sugar, chopped strawberries and rhubarb and your basil into a jar. Let sit for a day or two until juice is released.
Strain out the strawberries and rhubarb.
Add syrup to your pressure safe bottle and dilute with water. Use less water if you want a sweeter soda, or more water to dilute the syrup.
Add ginger bug to your bottle.
Let carbonate 1-3 days at room temperature, be sure to burp your bottle daily as using fruits speeds up fermentation time.
Chill in fridge before serving and garnish with extra basil!
