We could not buy bagels in Swaziland. So, I learned how to make them. It was always fun to surprise the single guys with fresh bagels when they got home from work. This was a favorite recipe that I made often.
While you can use all purpose flour, the high gluten bread flour makes a much better bagel. If you do not have bread flour, add a Tbl of gluten to the mix.
To change the bagel crust some, either add 1 1/2 tablespoon sugar or 1/4 cup instant malted milk powder to the the boiling water before adding the bagels.