When we were clearing up the dishes after dinner, there was still a cup of thick gravy left in the crockpot. I couldn't let that go to waste, so I added 1/2 cup of pearl barley, 1 1/2 cups of water, 2 ribs of celery (including leaves), 1/2 an onion chopped, one good sized carrot cut into small pieces, and 1/2 cup of corn kernels. Let that simmer all afternoon, with the lid on. Now I added another cup of water with a little beef bullion concentrate. It will make a satisfying supper on a fairly cold, dark night.
I could also make it a little heartier by adding some precooked loose hamburger that I have in the freezer.
Winter time is soup time!