Open the natto container and remove any included sauce and mustard packets
Stir the natto vigorously with chopsticks or a spoon until it becomes sticky and foamy
Add the sauce and mustard if desired
Stir again to combine
Serve over hot rice or eat it directly
Add toppings if desired, such as soy sauce, green onions, raw egg, kimchi, or seaweed
Eat with chopsticks or a spoon
Pair with rice, miso soup, or toast if preferred