In 4-quart saucepan, heat 5 cups water and the baking soda to boiling. Drop dough knots, 6 at a time, into boiling water. Cook 30 seconds or until dough looks slightly puffy and dimpled. Using slotted spoon, remove knots from water; return to cookie sheet; place about 1/2 inch apart. Brush dough with egg; sprinkle with salt.