What is this Ceramic Container?
I found this at a goodwill and have no clue what it is ??
Its a butter bell / butter keeper. My parents have one. You put water in the bottom, butter in the bell under the top/lid and that forms an airtight seal allowing you to keep the butter at room temperature.
Here's one for sale showing both parts clearly.
It's a French butter dish, used for keeping butter fresh without refrigerating it.