oatmeal

Pottage made by pouring some boiling liquid on meal (esp. oatmeal), and stirring it

A thick gruel of oatmeal and milk or water

a bland custard or pudding especially of oatmeal

a thin porridge (usually oatmeal or cornmeal)

made of sheep's or calf's viscera minced with oatmeal and suet and onions and boiled in the animal's stomach