The family and their home strut into the 70s, and culinary innovations come thick and fast. In this episode, the family and their home strut into the 70s. Mary Berry is on hand to help the family stock up their brand new chest freezer, and mum is liberated from the kitchen and gets a job for the first time, discovering how frozen and convenience food became a lifesaver for time-pressed working women. Giles meets the two hippies whose 70s adventures in health food spawned our national addiction to houmous, and the family go all Good Life and discover that milking a goat is nowhere near as simple as it looks. But the 70s wasn't all hippy food. Rapid developments in food technology see the culinary innovations come thick and fast, from powdered orange juice to Pot Noodle and boil-in-the-bag cod, while the birth of artificial-flavour technology sees the children's favourite crisps arrive just in time for their silver jubilee street party.

• Giles Coren
• Polly Russell