As an aside, I taste the same bitterness of I eat anything with red food coloring in it. Also, years ago I used to always have Lebanese Iced Tea with pine nuts at a restaurant we went to on a weekly basis. My husband, granddaughter, daughter and myself all had the tea with pine nuts every time we ate there. A day or two after the last time I had the pine nuts, I starting having crazy taste changes. Anything salty tasted real sour and anything sour was worse. This lasted for about a month.mi did a look up on what could cause sour taste and an article about pine nuts came up. Pine nuts can cause this in certain people, nut not any pine nuts, mostly the ones from China. No one else in my family has a problem with pine nuts or red food coloring. Genetic???