why do bagels have holes in the middle
Bagel The basic roll-with-a-hole design is hundreds of years old and has other practical advantages besides providing for a more even cooking and baking of the dough: The hole could be used to thread string or dowels through groups of bagels, allowing for easier handling and transportation and more appealing seller displays.[4][5]
Egg in the basket Egg in the basket—also known by many other names— is an egg fried in a hole of a slice of bread.[1][2][3] A waffle or bagel (with a large enough hole) can also be substituted for the slice of bread.[4][5]