I know these are ramekins but what i'm wondering is how do you clean these things?? I got them for next to nothing at the thrift store so I'd like to figure it out:) I have some just plain white ones that I got from Wal*mart that say right on the bottom- dishwasher safe.

These are made of clay type stuff and have a shiny coating inside.

Can't wait to here from y'all:)