Restaurant critic Giles Coren and writer and performer Sue Perkins spend a week going back to the food of their childhood in the 1970s. Cooking for them at home is top chef Mark Hix as they go down culinary memory lane. A soundtrack of 70s faves completes the picture of a time which seemed permanently sunny. The nation was slimmer and healthier in the 70s than they are today so after 7 days Sue and Giles discover whether their diet has been good for them.