Combine water, yeast, and sugar and stir in a large bowl or the bowl of a stand mixer fitted with a dough hook. If using active dry yeast, let this sit for around 5-10 minutes until it becomes foamy, if using instant yeast, this step can be skipped. 180 g water, 1 ½ teaspoons instant yeast, 32 g soft brown sugar
Add in the flour, spices, pumpkin puree and salt. Use a fork or switch the stand mixer onto low speed to combine it until a shaggy dough forms. The dough should be very thick and just a little bit sticky. 405 g bread flour , 120 g pure pumpkin puree, 1.5 teaspoon pumpkin spice, 1.25 teaspoon salt
Keep it kneading or mixing for around 10 minutes for optimal gluten development.
Form the dough Into a ball once it is kneaded and strong. Place the dough ball into a large bowl, lightly oiled bowl, and cover it with plastic wrap or a damp towel. Let the dough rise in a warm place until doubled in size.
Punch down the dough and pull it from the bowl onto a lightly floured work surface.
Cut the dough into 8 equal pieces (a kitchen scale works well to ensure even bagels) and shape each dough into a smooth ball. Let these dough balls rest for 5 minutes.
Use both hands' thumb and index finger to push a hole into the center of each dough ball, then roll the dough ball around your fingers in a circular motion to widen the hole. Aim for a large hole, as it will shrink once it sits.
Place the shaped bagels on a prepared sheet pan lined with parchment paper and loosely cover with a dampened kitchen towel. Let them proof for around 30-45 minutes until puffy while the oven preheats and a pot of water is brought to a boil.