Combine water, yeast, salt, and sugar. Mix until combined, and let sit for 10 minutes to proof. Yeast mixture should be bubbly at the end of 10 minutes. If it isn't, start over again with new yeast.
Add 4 cups flour, oil and flour to the mixture and knead until a soft dough forms. Continue adding flour bit by bit until the sides of your mixer are clean. Dough will be pretty sticky still.
Remove dough to an oiled bowl, cover, and let proof for one hour.
Pinch off small balls of dough and form into smooth uniform dough balls. Place on lightly floured surface.
Line two large baking sheets with parchment, and spray with cooking spray.
Mix 10 cups of water and 2/3 cup baking soda to a boil, and cook dough balls for 30 seconds.
Remove to parchment lined baking sheets, brush dough balls with egg wash, and sprinkle lightly with kosher salt.