Heat the sesame oil in a pot over medium high heat. Add the shallots, cook until softened, about five minutes. Add the mushrooms, cook until softened. Stir in the garlic then add the stout beer. Add the chicken broth, miso, garlic chili sauce, fish sauce and red chili flakes. Bring to a simmer.

Add the shrimp and noodles, simmer until shrimp is cooked through, about 3 minutes.

Ladle into bowls, top with cilantro, green onions and nori.