Place a large 2 quart saucepan over medium heat and add the butter. Let the butter melt and then add in brown sugar, light corn syrup and salt. Bring heat to a medium high, stirring frequently with a nonstick spatula so the mixture doesn't burn and bring to a low boil for at least 3 minutes. Sauce should look cohesive. Pour the finished sauce into the base of a 9-x-13-inch pan.
Punch down the risen dough and turn it out onto a lightly floured surface. Roll into a 12 × 18-inch rectangle, keeping the thickness as even as possible.
Sprinkle the filling evenly over the surface of the dough. Use your hands to gently press it down so it adheres evenly.
Starting from a long side, roll the dough tightly into a spiral. Gently lift and stretch the log slightly to even out its thickness. Make the baking soda soak. In a medium saucepan, bring baking soda, water, and barley malt syrup to a boil. For easy dipping, I used a saucepan with low sides, but you can also transfer the hot water to a baking dish (VERY CAREFULLY) if it is easier to dip the log of dough.Using a slotted spoon and GLOVES, dip the entire log carefully, wearing gloves on your hand, into the warm baking soda and barley malt mixture (or lye if you wish). Let it sit in the mixture for about 15–20 seconds. If you soak it for too long, it will taste of baking soda. Remove the log and let the excess soak drip off.Using a sharp knife, cut into 12 equal rolls, each about 1 1/2 inches thick. Arrange the rolls cut-side up in the prepared pan, on top of the sticky mixture.
Cover and let rise again until puffy, about 1 hour.
Preheat the oven to 350°F. Bake for 25 to 28 minutes, rotating the pan halfway through, until the rolls are lightly browned on top. If they begin to brown too quickly, loosely tent with foil. Remove from the oven and let cool in the pan for about 5-10 minutes, no longer, before very carefully, with baking mitt covered hands, inverting the pan onto a large serving dish or sheet pan. Top with pretzel salt.