Porringer
A porringer is a shallow bowl, between 100 and 150 mm (4–6 inches) in diameter, and 38 to 76 mm (1+1⁄2–3 inches) deep; the form originated in the medieval period in Europe and was made in wood, ceramic, pewter, cast iron and silver. They had flat, horizontal handles.
The precise purpose of porringers, or écuelles, as they are known in France, is in dispute; but it is thought that they were used to hold broth or gruel.