When you order a steak at a restaurant or steakhouse, you expect the meat to have been cut directly from the source and not modified in any way. In a bid to cut costs, though, some restaurant and hotel chains use "meat glue" to bond pieces of meat together to create real-looking whole steaks, specifically filet mignon, the most tender cut of steak . Fortunately, there are several ways to tell when a restaurant does this.

First, let's explain how restaurants form or pre-form filet mignon. They start by covering leftover chunks of meat with transglutaminase, an enzyme that the body naturally has but can be manufactured and used in powder form as a food additive. Then, the pieces are squished together, wrapped with plastic to form a roll, and refrigerated overnight to set.

The enzyme acts as a binder or glue, coagulating and fusing the chunks into a flawlessly shaped filet mignon that can be sliced into whole-looking cuts. Now, let's determine if your filet mignon was created with this meat glue. It's difficult to see the difference just by looking at the outside of your steak, and it will taste normal, too.

Cutting the portion of meat in half, though, will reveal seams where the chunks were bonded together. The steak could even fall apart rather than remain whole as you slice. If you want to avoid food that's held together with meat glue, ask your waiter before ordering filet mignon whether the meat is formed or pre-formed.

The FDA doesn't require restaurants to tell diners on .