nevermind

I found this item. Is it a common thing or is it rare at all? Even semi-rare?

I think you get those if you eat the tavern soups you can buy off npcs.

It appears you are correct, sir. After you said that, I went to a tavern and bought some soup, and after I ate it, another large wooden bowl was in my pack.

Thank you for the info.

You'll get your deposit back once you return the container to the proper drop off location.