Fry the onion and garlic for until softened. Add the ginger and Jerk seasoning and cook for a few seconds more, stirring constantly. Pour in the beef broth and add the soy sauce. Bring the liquid to a gentle simmer and cook for 3–4 minutes. Adjust the seasoning to taste, adding a little extra soy sauce if needed.
In a pan, over a high heat cook the steak - season with the Jerk rub on both sides with a little salt, black pepper. Cook on each side for 1½–2 minutes, depending on its thickness. Transfer to a board and leave to rest.
To cook the noodles, pop into the broth for 3–4 minutes, stirring occasionally. Ladle the broth and noodles in bowls and add sliced steak. garnish with coriander and pickled onions (see blog) and chilli flakes (optional).