Langkah 3
Place over high heat. Add onions, chile peppers, mushrooms, ginger, green onion whites, miso paste and salt and bring to a boil. Then reduce to a slow simmer. Let that cook for 6-8 hours. Add water as the level drops at about the rate of two cups per hour. You should also use a ladle to skim the fat off the top of this broth, however don't overdo it. I only start to remove fat as the globules get bigger than a quarter. I think asian broths benefits from a fair amount of animal fat.