The story of British supermarkets in the 1970s, starting with the rise of convenience foods such as SPAM and boil-in-the-bag meals. With food scientist Dr Chris Clarke and Rustie Lee.

With package holidays broadening tastes, Marks and Spencer took a garlic gamble by introducing the ready-made chicken Kiev. And Dr Chris replicates pickled onion Monster Munch in his lab.

How we did Christmas in the 70s, with the advent of artificial trees and freezer stores.