Not convincing at all - I know I was there as a child in the 50s! They haven;t mentioned the Prestige pressure cooker which my Mum had around 1955, she made lovely stews in that using cheaper cuts of meat. Nor have they mentioned making dumplings from Fray Bentos suet which was added a few mins before serving it.
What about the salted runner beans which were layed in block salt in a Kilner jar and preserved like this all Winter in the dark pantry under the stairs.
The delicious "Tizer" drink my Grandma used to give us children which we added sugar to as the bibbles went up our nose!
Sugar sandwiches, pink blancmange, jam tarts, spotted dick, jam roly poly made in a muslin, blackberries from the garden made into bramble jelly or blackberry vinegar, the Corona "pop" man bringing Raspberry Cream Soda, the bread man with enormous wicker basket calling at the door with home made bread, Yorkshire pudding which was left over from the main course eaten as a pudding with home made jam on, bread and dripping, cups of steaming Bovril, welfare concentrated orange, but the thing we don't have now is bread and butter eaten with tinned fruit!