Preheat oven to 400°F. LIne 3 large cookie sheets with parchment paper or silicone mat. Set aside.
Slice Polska Kielbasa into 30 pieces (about ½" wide per piece). Separate biscuits. Place one piece of sausage in the middle of each biscuit. Wrap the biscuit dough up and around the sausage, pressing dough together so there are no holes. Repeat process for all of the biscuits and sausage pieces. You'll have 30 biscuit wrapped sausage pieces when you're done.
Meanwhile, bring 6 cups of water to a boil in a medium, deep saucepan. Add the baking soda and stir. With a slotted spoon, lower each biscuit ball (one at a time) into boiling water. Let boil for 15 seconds, then remove to prepared cookie sheet. Sprinkle with salt. Bake for 12-16 minutes or until nicely browned (pretzel brown), but watch them closely. You don't want them to burn. Let cool slightly before serving.