Porridge (historically also spelled porage, porrige, or parritch) is a food commonly eaten as a breakfast cereal dish, made by boiling ground, crushed or chopped starchy plants—typically grain—in water or milk
I think the idea that the French word potage (soup) is relevant might be your own invention GabriellaG
Estranged Son and Future Granddaughter
To think that London, or anywhere else for that matter, does not belong to any one demographic