What Causes the ‘Pineapple’ Shape of a Toasted Bagel?

A bagel becomes a pineapple when you toast it. Imagine the bagel as a flat circle with a hole in the middle. When you put it in the toaster, heat goes through the bread from all sides. The edges get warmer faster than the center, and that’s why they turn golden brown first, like the points of a pineapple! The inside stays softer, giving it that fun, bumpy look.

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Examples

  1. A toasted bagel looks like a pineapple because the edges are crispy and golden.
  2. Toasting bread with a hole makes it look bumpy and tasty.
  3. When you toast a ring-shaped bread, the outside gets brown first.

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