Sliver

It seems like you may be looking for information about a type of food that is served in restaurants in the USA and is referred to as "sliver." However, "sliver" is not a type of food, but rather a term used to describe a thin, narrow piece of something. It is possible that you may be thinking of a specific dish or ingredient that is thinly sliced or shaped like a sliver.

One possibility is that you may be referring to "silvered" almonds, which are almonds that have been thinly sliced and then coated in a thin layer of silver-colored metal, such as silver leaf or silver paint. Silvered almonds are often used as a garnish or decoration for dishes, and can be found in some restaurants or specialty food stores.

Another possibility is that you may be thinking of a dish that features very thinly sliced meat, such as carpaccio or prosciutto. These dishes typically feature raw or cured meat that has been sliced into thin slivers and served as an appetizer or salad.

If you have more specific information about the type of dish or ingredient you are thinking of, I may be able to provide more helpful information. In the meantime, I hope this information is helpful!