Pretty much follow the steps for making regular sourdough bread. Mix all wet ingredients and then adding flour, one cup at a time. The reason I add a small amount of dry yeast is for better rising and cutting the fermentation time. If you pursue nutrition then skip yeast and increase sourdough starter to 1 cup and ferment 6 hours.

Allow the dough to rest and rise for 4-5 hours. Roll the dough into a long rope and cut it to 22 portions at 1 inch length. Shape it into pretzel bite size. Allow them to rest 15 minutes.

Preheat the oven to 375F. Bring the water to a boil then add baking soda. Boil the pretzels at 7-8 per batch for 30 second. Remove with a large slotted spoon and set aside. Work on the rest of pretzels until finish.

Spread all boiled pretzels on a baking sheet. Brush the tops with butter and sprinkle coarse salt. Bake into the oven and bake 15-18 minutes until the color turn into golden brown.