A piece of bacon is typically a slice or portion of salt-cured pork, most commonly cut from the belly or back of the pig. Bacon is usually cured and sometimes smoked, used as a breakfast side dish, a flavoring ingredient, or as an accent in various recipes. Pieces of bacon can also refer to smaller bits or ends of bacon that are often meatier and used in cooking or as toppings.
There are various types of bacon including side bacon (streaky bacon), back bacon, collar bacon, and jowl bacon, each coming from different parts of the pig and differing in fat content and flavor. Bacon can also come in "ends and pieces" form, which are smaller cuts ideal for recipes requiring chopped bacon. There is flavored bacon from other meats such as beef (Wagyu beef bacon pieces exist) and even vegetarian alternatives.
In summary, a "piece of bacon" could be either a whole slice or smaller bits of bacon used in cooking, representing a versatile and flavorful ingredient in many cuisines.