Preheat oven to 425 degrees F.
Whisk together the oil, mustard seeds, jalapeno, ginger, and turmeric in a small bowl.
Place cauliflower in a medium baking dish and toss with the flavored oil and season with salt. Roast until lightly golden brown and just tender, 20 to 25 minutes. Serve hot.
Recipe courtesy of Bobby Flay