Burnt toast refers to bread that has been overcooked, typically in a toaster or on a grill, resulting in a darkened, charred surface. This occurs when the sugars and starches in the bread undergo a process called caramelization, which can turn into carbon if exposed to high heat for too long. Burnt toast is often considered unappetizing due to its bitter taste and unpleasant texture. While some people may enjoy the flavor of slightly charred bread, burnt toast is generally seen as a cooking mistake. It can be a common occurrence in households where toasters are used frequently. In addition to its taste, burnt toast can also produce smoke, which may trigger smoke alarms in the kitchen.