How much cauliflower? What about broccoli? We had an untrimmed head of cauliflower that weighed about 1-3/4 pounds and produced 1 pound of florets. However much cauliflower you have on hand (within reason) is the right amount. You can also do a mix of cauliflower and broccoli, or just use broccoli. The taste will be slightly different, but delicious.