Roasted Cauliflower with cumin

1 head cauliflower , outer green leaves removed, broken into florets sea salt olive oil 1 knob butter 2 teaspoons cumin seeds 2 teaspoons coriander seeds 1 -2[...]

2 heads cauliflower , trimmed and separated into 2-inch florets (about 5 pounds) 2 heads garlic , separated into unpeeled cloves, pointed ends trimmed 1/3 cup[...]