The bagel button on toasters is specifically designed to toast bagels in a way that optimizes their taste and texture. Bagels are denser and thicker than regular sliced bread, and they have a unique texture that can benefit from a different toasting method.
When you use the bagel button on a toaster, it typically activates a setting that toasts the cut side of the bagel while only lightly warming the outer side. This is done to achieve the ideal bagel toasting, where the inside is warmed and slightly toasted, while the outside remains crusty and delicious.
The standard toasting setting on a toaster would treat both sides of the bagel equally, which could result in an over-toasted exterior and an under-toasted interior. The bagel button helps prevent this and ensures that bagels are toasted to perfection.
It's important to note that toasters may vary in their bagel toasting settings, so some may use different methods or combinations of heating elements to achieve the desired bagel toasting results. But overall, the bagel button serves the purpose of enhancing the toasting experience for bagels specifically.