The setting on toasters that can burn the toast is usually the highest or darkest setting, often labeled as "dark" or "maximum." The reason for including such a setting is to accommodate personal preferences and different types of bread.
Personal preferences: People have varying tastes when it comes to how they like their toast. Some prefer it lightly toasted, while others enjoy a darker, crispier texture. By offering a range of settings, toasters allow users to customize the level of toasting to their liking.
Different types of bread: Not all bread slices are the same. Thicker slices or denser types of bread might require a longer toasting time to reach the desired level of crispness. If a toaster didn't have a higher setting, it might not be able to fully toast certain types of bread, leaving them undercooked.
Versatility: Toaster ovens, which are a variation of traditional toasters, can handle more than just slices of bread. They can be used to toast bagels, English muffins, or even heat up leftover pizza. The higher settings can be useful for achieving the desired crispiness on these different foods.
While the highest setting might seem excessive for some, it serves a purpose for those who prefer their toast well-done or for special toasting needs. The key is for users to find the setting that suits their preferences and the type of bread they are toasting. Always keep an eye on the toast while it's toasting to prevent it from burning if you prefer a lighter toast.