sandwich

A sandwich is a dish typically consisting variously of meat, cheese, sauces, and vegetables used as a filling between slices of bread, or placed atop a slice of bread; or, more generally, any dish in which bread serves as a container or wrapper for another food type. The sandwich began as a portable, convenient food in the Western world, and over time it has become prevalent worldwide.

There has been social media debate over the precise definition of sandwich, specifically whether a hot dog or open sandwich can be categorised as such. Other items, like hamburgers and burritos, were also considered. In the United States, the Department of Agriculture (USDA) and the Food and Drug Administration (FDA) are the responsible agencies for protecting the definition of sandwich. The USDA uses the definition, "at least 35% cooked meat and no more than 50% bread" for closed sandwiches, and "at least 50% cooked meat" for open sandwiches. However, the same USDA manual determines that burritos and fajitas are "sandwich-like" and frankfurters are "sandwich type", while stromboli is explicitly excluded. In Britain, the British Sandwich Association defines a sandwich as "any form of bread with a filling, generally assembled cold"; a definition which includes wraps and bagels, but potentially excludes dishes assembled and served hot, such as burgers.