Combine all wet ingredients, sourdough starter, honey, and water.
Add the flour and salt, and mix just to combine. Let rest for 15 minutes before kneading.
Knead on low for 5-7 minutes until the dough has come together and is no longer sticking to the sides of the bowl.
Cover the bowl and let ferment on the counter at room temperature overnight.
Divide the dough into 6-8 pieces. Roll the pieces into balls and use your thumb to poke a hole in the middle. Gently stretch the hole out while trying to maintain an even ring. Let the bagels rest for 1 hour.
Preheat your oven to 400 degrees Fahrenheit. Bring a large pot of water along with the sugar to a roaring boil. Working in batches to not overcrowd the pot, boil the bagels for 2 minutes on each side.
Transfer the boiled bagels to a parchment-lined baking sheet. Sprinkle on any additional toppings you would like.
Bake for 20-25 minutes until the tops are golden brown.
Transfer the bagels to a cooling rack to prevent the bottoms from further browning. Enjoy!
Notes
I highly suggest sticking with bread flour for this recipe. Other flours will work, but you won't achieve the characteristic bagel texture. These bagels are best eaten within 3-4 days but can be stored in freezer bags for 2-6 months.