I have noticed something similar to this myself. A week ago or so I tried a bite of potatoes that came with my breakfast (steak and eggs mmmm). I grew up on the whole meat and potatoes thing being from a farming community. And to my surprise the potatoes tasted bland and unappealing to me. I had a bite of cookie last weekend also and found that it did not taste that good either which made it really easy for me to stop eating it. Though I must say I found it very hard to resist the Krispy Kream donuts the guys brought into work today…. But some how I kept myself from eating them.