This lovely Christmassy-flavoured kvass is enjoyed by everyone in our household. It is usually served chilled but can also be gently heated to make a warm toddy. It will keep well for a month in the fridge.
Pour 200ml/7fl oz of the water into your clean fermentation jar. It should be a kilner-style jar with a rubber seal and flip-off lid so it can be sealed tightly later. Add the syrup, probiotic powder and nutmeg, and all