Shit on a Shingle, sometimes known as SOS for those too polite to use any toilet humor, is a food that in essence consists of chipped beef cooked in a el cheapo white sauce (usually milk and cream thickened with flour), and served on toast. I suppose the beef represents the shit and the toast serves as the shingle.
To make it you do the following:
- Put the milk, cream, and beef into a saucepan along with some black pepper and whatever other spices you think would make this more edible.
- Heat, stirring constantly, until the beef is rehydrated and the sauce is hot.
- Slowly add flour to thicken, just as you would to make gravy.
- Serve on toast, buttered if possible.
As far as I can tell both the meal and the name originate from the Army mess halls during World War II. It was easy to make, lots of calories, lots of protein, and a captive audience.