1Roast an assortment of onions in the oven at 425°F until slightly charred.
2Add roasted onions to a pot with 5 liters of water and boil on the stove. This should take 30 minutes, but the longer you do it for, the more flavor you get out.
3Cook some noodles.
4In your serving bowl, add soy sauce, then scallion and sesame oil, then finally your onion broth before adding in the cooked noodles and garnishing with scallions and chives.