" Color has little to do with the quality of olive oil, and it offers no clues to whether an olive oil is rancid. Instead, use your nose and palate: does the olive oil smell like a box of crayons, candle wax, or the oil floating on top of an old jar of peanut butter? If so, it’s rancid. The sad truth is that most Americans, accustomed to the taste of rancid olive oil, actually prefer it. "

― Samin Nosrat , Salt, Fat, Acid, Heat: Mastering the Elements of Good Cooking