Food Unwrapped returns with Jimmy Doherty, Kate Quilton and Matt Tebbutt revealing the secrets behind the food on our plate. Kate lifts the lid on the nation's favourite yeast extract, and puts their latest TV advert to the test which claims they can predict whether you love it or hate it. Jimmy finds out how plastic packaging is polluting the food chain and having global implications. While Matt undertakes his strangest experiment yet: running on custard - which bizarrely helps solve the age old mystery of how to get ketchup out of the bottle.