put oil in wok and set over medium high heat. when it's hot, add cumin and mustard seeds. as soon as mustard seeds begin to pop, add garlic, ginger, cauliflower, and green chiles all at the same time. stir and fry for 5-7 minutes or until cauliflower has turned somewhat brown.
now add salt, pepper, garam masala, and cayenne and give florets a good toss.
put in 1/4 c water and cover the wok immediately. cook for 2 more minutes.