Sometimes noodle sellers offer their noodles "dom yam" style, which adds a little more depth to the standard noodle soup. If you already have the stock ready made, then this is a cinch to make; you just have to gather the ingredients.
Heat the stock and water separately. Add the pork meat, blood cake, pork meat balls and tomatoes to the stock and bring to a gentle simmer.
Bring the water to a boil and add the noodles in in a strainer and cook until done. Divide the noodles between 4 bowls. When the pork meat is cooked divide all the meat, balls, blood and tomatoes between the bowls. Add a cup (250ml) or so to each bowl. Divide the garnishes (green onion, coriander, caster sugar, peanuts and lime wedge) between each bowl.
Serve the soup and allow your diners to season with the condiments to suit their own taste.