If using a bread machine, place the first four ingredients in order suggested by the manufacturer and select dough setting. Check dough after 5-minutes of mixing; add 1-2 tablespoons of water (if too dense) or flour (if too loose) only if needed) If doing by hand, mix the same ingredients and knead for about 15-minutes until smooth and elastic.NOTE: (see 'Windowpane Test' post under 'Food or Tips' if unsure if gluten is achieved and dough ready to use.) See below for link.
Turn dough onto a lightly floured surface and divide dough into 8-balls.
Roll each ball into a 20" rope and cut into small pieces.
In a large pot, bring 2-quarts of water and the baking soda to a boil.
Drop dough into boiling water, two at a time, and boil for 10-15 seconds. Remove with a slotted spoon and drain on paper towels.
Place the boiled dough on greased baking sheets and bake at 425°F for 8-10 minutes or until golden brown.
Remove from oven and immediately brush with melted butter and sprinkle with coarse salt.