Forget what you know about vegetarian food. Buddhas delight, or luohan zhai, makes for a moreish, satisfying dinner. Traditionally eaten by buddhist monks, this vegetarian stew is chock full of earthy shiitake mushrooms, crisp cabbage leaves simmered till tender, and a tangle of glass noodles bubbling in a base of sesame and kecap manis, or sweet soy sauce.