Hot Dogs with Caramelized Onions and Pretzel Buns

1 First and foremost, we'll make the buns. And we're going to use a stand mixer to do it. In the bowl of the stand mixer, combine the warm water and honey. Sprinkle the yeast on top, and let stand for 5-10 minutes.
2 Once the yeast has become frothy, add the butter, flour and salt to the mixture. Using the dough hook attachment, mix on low until the mixture is combined, then increase the speed to a medium intensity, beating the dough for about 5 minutes until it becomes pliable. (Do not fret if the dough is sticky! It should be tacky.)
3 When the dough has become pliable, transfer it from the stand mixer to a large greased bowl. Cover and let rise for 45 minutes, or until the dough has doubled in size.
4 While the dough is rising, cut up the onions and place them in a large skillet over medium-low heat, simmering. Allow them this entire time to simmer, as they'll cook as you continue with the buns and be done once the buns are out of the oven.
5 When the dough has doubled in size, turn it out onto a floured surface, and cut into 8 6" logs. (You can make them smaller, too, as they will expand as they cook... mine turned out a bit too large.) Shape them, then let them rest for 10 minutes.
6 Preheat the oven to 350°F.
7 In a large pot over high heat, bring 16 cups of water to a boil, and add the baking soda.
8 Line a large baking sheet with parchment paper.
9 When the water is boiling, and the buns have rested for 10 minutes, add one bun at a time to the boiling water, and cook for 30 seconds.
10 Remove the bun from the water using a slotted spoon, and place on the prepared baking sheet. Repeat this process with the remaining buns.
11 Cut 3-4 shallow diagonals into each bun with a sharp knife, brush with the egg and sprinkle coarse salt over the buns.
12 Transfer the buns to the oven, cooking for 15-20 minutes or until golden brown and crisp.
13 While the buns are baking, cook the hot dogs to the manufacturer's instructions.
14 When the buns are golden brown and crisp, remove from the oven. Allow a few minutes to cool before cutting into them and adding the hot dog, caramelized onions and the condiments of your choosing.
15 Enjoy warm!