Cut the cauliflower into small bite-sized florets, rinse and drain well. (Note: If the florets are too big, they may not get properly coated with sauce.)
Mix the yoghurt sauce in a bowl, fold in the rinsed and drained cauliflower florets, and turn out into a gratin dish (a shallow, heat-proof dish).
Place the dish on the wire shelf, slot the shelf into the middle shelf position, and cook on Combi 7 for 15 minutes.