Phillip and Holly try fizzy milk... and their reactions are hilarious!

It’s the latest health drink craze with reports showing a 400% sales increase in supermarkets across the UK in the last 18 months.

According to some experts, the fermented milk drink kefir is not only a tasty tipple, but also a miracle solution that can improve your digestion and help you fight off illness. So is this just a gut reaction, or does kefir actually work?

Liz Earle is here to answer our questions, as we put some supermarket kefir drinks to the taste test and learn how to make our own.