Episode 7

Revealing the surprising lab tests on whether those half-eaten jars lurking at the back of your fridge are still safe to eat. With some foods carrying warnings that, once opened, they should be consumed within a few days or weeks - what happens if they're not? Also, they may cost more, but are the fancy soups sold as fresh any healthier than the cheaper varieties that come in a tin? And, as myths about the microwave are debunked, there's unexpected advice on some foods you might never have thought of cooking in there.