A friend of mine bought some pine nuts to make pestso. She sampled a few of them. This is what she says: "Along with other products from China that have made us & our children sick, add Pine Nuts to the growing list. China is producing & shipping to the US pine nuts that are causing a syndrome known as "Pine Mouth". The symptoms are unpleasant & last several weeks. Those afflicted can not taste anything but a rank, bitter taste. Loss of taste buds indicates this is affecting taste receptors in the mouth & the brain's ability to adequately interpret what is being consumed. If we are not going to stop importing from China, the FDA needs to impose warnings on packaging to protect citizens. Whole Foods, Trader Joe's ..... Are all selling these Pine Nuts that are making people sick. If we're not going to impose stricter guidelines on imports, then at least inform citizens of the risk. google Pine Mouth .., amazing how many people have been afflicted. It's not permanent, but saying it's unpleasant is an understatement. Obviously, these pine nuts are releasing some sort of toxin." This is not the time of year you want a bitter taste in your mouth constantly. Apparently they are safe if they are cooked.