Found a Beeb recipe, and used two 7" sponge tins as directed.
Enjoyed our cake.
Saw a coffee and walnut cake in Sainsbury's this morning, so bought it.
Seemed a bit small, so on measuring, it was only 4" diameter
That means 1/3rd the size of a home baked one.
How soon before the packaging of shop-bought cakes forms a bigger proportion of the cost than the cake itaself?
I have in mind, also, Mr.Kipling, where the bakewell tarts are in aluminium formers, then in a plastic tray, then wrapped in cellophane, and finally in a cardboard box.
(Except probably not cellophane any more as it predated the arrival of petrochemical plastics; the smelly factory in Bridgewater having long gone)