You must have noticed that peppery sensation at the back of the throat when you sip neat olive; it stings and may even make you cough. It’s irritating; it’s pungent, even unpleasant. What you should know though is that these are all definite signs of good quality olive oil. And, the more peppery, the more stinging, the better the quality of the oil. So why do you get that stinging and irritating?