It seems that every discussion of the menu for an American Thanksgiving dinner includes a casserole made with green beans and a can of Campbell's condensed mushroom soup. It was never on our table, but it was only this morning that I found out why: My brother and I were already university students when that "traditional" Thanksgiving item was invented. A little blurb in the New York Times says that Campbell's test kitchen introduced the recipe for the green-bean casserole in 1955.
Cross-posted on Your Choice.

