Step one: Open the tonkotsu noodles packaging box and tear off half of the cover paper.

Step 2: Put the beef buns in whole.

Step 3: Adjust the amount of vinegar packet according to your personal taste.

Step 4: Put in the vegetable buns completely.

Step 5: Pour boiling water into the bowl of noodles.

Step 6: Put the cover paper back into the box, press it with a soup bag and a fork to prevent the heat from escaping, and wait for 5 minutes.

Step 7: After the time is up, tear off the lid, pour the soup bag covered with paper into the noodles and serve.