I remember the elders telling tales when I was very young about a gravy that used to be a piano, but was taken to Mexico and left out in the hot sun. The story goes, the gravy melted from the heat and could never be put back together as a piano ever again. I realize that these are just old stories told by old men, and that all gravy today could be a piano, but if that tale is true, there was one gravy that could never be piano after Mexico got through with it.