Massive can of worms open, everywhere
We've done this Gok Wan recipe a couple of times -- but with instant stock and frying steak. So rather than stewing the beef for 2hrs we just give it a blast for 20mins or so to reduce slightly (any more and your instant stock will be rather horrible), then add the beef to cook in 3-4mins. Easy, and very tasty.
http://www.redonline.co.uk/food/recipes/gok-wan-s-beef-noodle-soup-recipes-food