Apple and Elderflower Kombucha

Springtime is full of flowering elderflower trees, and this lovely scented flower is often used of course for elderflower lemonade and cordial, but is also amazing in fermented drinks. It has a strong flavour and it helps create lots of carbonation. Other flowers can also be used in fermentation, like rose and lavender. The apple juice is best homemade but you can also buy good-quality cold-pressed and unpasteurised apple juice if you prefer.