To serve this two servings at a time, cook only half of the noodles and then proceed through all steps as normal until you get to the serving steps (including adding the tahini/soy mix to the bowls). Divide ingredients at the point, with half being served right away and half being stored. Store the broth, tahini/soy mix and toppings separately. (Tofu, mushrooms, corn and scallions can be saved together if just for 18-24 hours until the next lunch/dinner.)