For a chewier texture, you can use bread flour instead of all-purpose flour.
Ensure the water for boiling is at a rolling boil before adding the bagels.
These bagels freeze well. Let them cool completely, wrap individually in plastic wrap, and store in a freezer bag for up to 3 months. Toast directly from frozen.
You can add toppings like sesame seeds, poppy seeds, or everything bagel seasoning after boiling but before baking.