1) Steam 1 or 2 bags of frozen cauliflower florets (or a whole head of cauliflower, cut into florets without excessive stem) until tender. I needed to do this in two batches as my steamer isn't big enough, so kept the first batch warm in the oven while the second batch cooked.
2) Place cooked cauliflower, with any excess water drained, into a food processor. Add a generous knob of butter, seasonings to tastes
3) Process until smooth and fluffy, adding an optional TBSP or two of cream, heavy cream, coconut cream or sour cream if needed/desired.
Serve hot. Serves 6-8