For a richer flavor, brown the lamb cubes in a separate pan before layering them in the pot. Adjust the amount of beer to your liking. You can also substitute some of the beer with beef or vegetable broth. Gomgush tastes even better the next day, as the flavors meld together overnight. Refrigerate leftovers promptly. If you prefer a thicker stew, you can mash some of the potatoes towards the end of the cooking time.