<p>Want a healthy gut? Then brew and drink your own naurally fermented kombucha ? it is packed full of probiotics and is thought to improve digestion and boost the immune system.<br>Louise Avery is one of London's best-connected kombucha producers and the owner of LA Brewery. Here she reveals her tried-and-tested recipes that use the freshest produce to create truly delicious fermented teas.<br>Starting with an explanation of exactly what kombuch...