Creamed field corn? New thing I bought at the local produce market.

I didn't get to do my usual "putting up" of field peas and butter beans this year. So, this morning, I went to our local produce market to get some frozen black-eyed peas and some butter beans. While digging in the chest-freezer with the girl who helped me, she mentioned they also had frozen creamed field corn. She said they sell a ton of it. So, I bought some. It's a quart-sized ziplock bag of what looks like creamed yellow corn. However, the guy who owns the produce market told me to add at least a quart of water to it and simmer until it thickens up. He said I could re-freeze leftovers and it would be fine to reheat later.

I'm going to try it tomorrow, to go with the black-eyed peas and collard greens. I'd planned to make grits, but will give this stuff a shot instead.

Have any of you ever bought such a thing?