Heat the oil in a large skillet over medium-high heat, add the cumin seeds and cook until they begin to crackle, just 30 seconds or so. Stir in the onions, along with the turmeric and a few pinches of salt. Cook, stirring often, until the onions caramelize a bit and turn lightly golden, roughly 7 - 10 minutes. Add the red chiles, sesame seeds, garlic, and half of the ginger. Continue to cook for another minute. Add the cauliflower and stir well. Cover the pan and cook the cauliflower over low-medium heat for 3 - 5 minutes, until just tender.
When the cauliflower is nearly cooked, remove the lid, increase the heat, and stir in the green chiles and remaining ginger. Salt to taste, sprinkle with cilantro and enjoy.
