Pre-heat oven to 450° F, with a baking stone/steel inside if using.
Fill a pot with cold water and 1 tsp salt. Bring to a boil.
In another container, prepare a bath of cold water and ice. (Optional, but recommended.)
OPTIONAL: Sprinkle toppings on a baking sheet, parchment sheet, or some other area.
OPTIONAL: Prepare an egg wash by whisking 1 egg white with a few drops of water.
"Float test" one bagel by placing it in water. If it floats, you are ready to boil them. If it doesn't, dust it with some flour and wait 5-10 more minutes. (Optional, but recommended.)
Once water comes to a boil, leave the heat on, and add malt syrup or non-diastatic malt powder (2 Tbsp). Gradually add baking soda (2 Tbsp). (Be prepared to stir down the foam with your spatula or "spider".)
Place the first 3 bagels in the boiling water bath. Let them boil for 30 seconds.
Flip the bagels over (using a spatula or "spider") and allow to boil for an additional 30-60 seconds.
Remove bagels to ice water bath.
Repeat with remaining bagels.
Transfer bagels from ice water to a dusted parchment paper, or wherever your toppings are. (If you're using an egg wash, you'll want to brush that on the bagels first, then place them egg-side down on the toppings.)
Line baking surface with parchment paper.
Transfer bagels to baking surface, either topping-side down or semolina-side down.
Bake for about 8 minutes.
Flip bagels over with a spatula and bake for an additional 8 minutes.
Turn off the oven. As long as the bagels aren't burning, allow them to rest in the oven for a few more minutes with the door open.
Remove to a cooling rack.