'Live' foods which add back the good bacteria are the perfect way to 'eat dirty' – and dairy kefir can be a delicious way to enjoy the benefits. It used to be tricky to get hold of, but now different brands are appearing in the chiller cabinet, as well as in specialist health shops. In this episode, Kate talks to Ciaran Adam, who helped to develop a range of new kefirs for The Collective Dairy in London. He talks about how our current 'clean' lives may not be good for our health – and how fermented foods like kefir make a positive difference. Plus why fruit plus kefir can be an explosive combination… Read more at The Collective Dairy.