Oat soup. Basically oatmeal in American English.

😮 you seriously never heard of porridge i find that hard to believe . it is a oatmeal cereal served for breakfast [xenonrush]

It's either oatmeal, or pea soup with bits of ham...never quite sure in the old stories...but pease porridge is a thing in the old nursery rhymes.

oatmeal /w milk

Oatmeal

Baldy locks and the three hairs

LMFAO when I asked my grandma she said it was grits

Do you remember the old saying;
'There's no such thing as a stupid question'