Raw broccoli works well in this salad, but you can blanch it beforehand if you prefer. Bring a pot of salted water to a boil, and place the cut florets inside the boiling water for 1 minute. Remove them with a slotted spoon, and plunge into a large bowl of ice water for 1 minute, or until cool. Drain and pat them dry using a tea towel before pulsing in the food processor.