In a stand mixer fitted with the dough hook, add the lukewarm water and brown sugar, then sprinkle the yeast on top and stir to combine.
Add in the flours and salt, then turn the mixer to medium speed and mix for about 5 minutes until the dough is smooth.
In a separate small bowl, combine the cinnamon and 1 tablespoon of water to form a thick paste.
While the dough is mixing on low speed, add the cinnamon paste a few spoonfuls at a time to evenly disperse swirls throughout the dough. You can also do this by hand to ensure it's properly dispersed without being overly mixed.
Transfer the dough to a lightly greased bowl. Cover with plastic wrap and place in the fridge to rise overnight. Alternatively, you can let the dough rise at room temperature for about 1 hour or until doubled in size.
When ready to bake the bagels, prepare two large baking sheets with parchment paper and 12 individual squares of parchment paper.
Once the dough has proofed, divide it into 12 equally portioned balls. They should weigh about 90g each. Roll each into a smooth ball, covering them as you go.
To shape into bagels, roll each ball into a log. Flatten out one end of the log and place the other end on top. Bring the edges of the flattened out dough up and over to encase the second end of the log. Alternatively, you can press your thumb through the center of the ball and gently spin it around to create a bigger hole.
Place the shaped bagels on the prepared parchment squares on one baking sheet. Cover the bagels with plastic wrap and allow to rise at room temperature for about 1 hour.
Towards the end of the proof time, preheat the oven to 425 degrees F.
In a large pot, bring the 4 quarts of water to a boil.
Once the bagels have fully proofed and the water is boiling, add the barley malt syrup and baking soda to the water.
Bring the water down to a simmer, then add 2-3 bagels at a time to the water for 30 seconds on each side. Use the parchment squares to lower the bagels into the water.
Place the bagels back on the baking sheets, about 6 per baking sheet.
Brush an egg white on each of the bagels, and top with the raw sugar, cinnamon mixture.
Bake the bagels for 18-20 minutes or until deeply golden. Allow to cool completely before serving.