Supermarkets Unwrapped

The team head for the Vegan Aisle for all the news on animal-free food. Helen Lawal visits Tesco to find out how they keep up with all the plant-based burger trend, John Whaite seeks out the secret to the snap in a vegan sausage skin, Kate Quilton finds out how exactly you milk an oat, and Briony May Williams learns how to make a quiche without egg.