Cook, stirring often, for 5 minutes. (This is how it???s worded in the original book ??? it sounds as if the veg are boiling in oil, but really the ratio is so great that it???s a lot of cauliflower, onions and olives sort of glistening in the oil ??? it???s hard to tell if it???s actually ???boiling???, so just make sure it???s cooking to the point where any juices you see are bubbling.)