1: Bring a 6 qt pot of water to boil.
2: While waiting, prepare the meat. Combine the ground pork, fish sauce, sugar, MSG, chicken bouillon, and black pepper. Set aside.
3: Once the water boils, create meatballs from the ground pork and drop them into the boiling water. Allow to cook for 5 minutes. Once they float, they should be cooked.
4: Add your carrots and celery and allow to cook for another 5 minutes.
5: In a separate pot, cook your macaroni according to package instructions.
6: Season your soup with additional fish sauce, sugar, and chicken bouillon as needed.
7: Assemble your bowl with macaroni, green onions, cilantro, black pepper, fried shallots, and ladle in the soup. Add chili oil for an additional kick.