According to a Washington Post crossword, it's an olla.
stoneware, pottery Stoneware and pottery are general categories, while an olla is specifically an earthenware crock
A small earthenware pot is a pipkin
olla
An olla is a ceramic pot. It is used to cook soups and stews.
Plant
crock
a crock is: 1) an earthenware pot or pitcher. 2) a person crippled by ill- health.
Crock
potty
anteing
Pot.
Pongal is the name of the celebration and a food... Pongal-sweet rice cooked in an earthenware pot