alternative brassica oleracea cauliflower cruciferous cultivar curd color curd colour edible fine flavor flavour florets food inflorescence inflorescence meristems mashed potato alternative mild nutritious plants texture vegetable vegetables white cauliflower cauliflower rice chopped grated milder shredded sweeter broccoflower broccoli broccoli-cauliflower cross cauliflower cultivar cross-pollination green green cauliflower green-headed