Susie and AJ agree that every freezer in the UK must have a bag of frozen peas for that odd time where you have a swollen joint or twisted ankle. They can't however agree about buying frozen jacket potatoes. Susie thinks it's a great idea but AJ isn't so sure. Luckily Matt Whelan of Field Fare, the high quality frozen food people, is on hand to adjudicate and explain some simple rules for freezing stuff to cut down on your food waste.