Most olive oils sold in the United States are adulterated or deceptively labeled
After learning a few years ago about the large-scale fraud involved in the export olive oil industry, I started trying domestic olive oil instead (I'm in the US).My favorite domestic oil, which is available everywhere now, is California Olive Ranch (e.g, http://amzn.com/B005CT8R90). It's delicious. Tastes nothing like the horrible oils I had been unknowingly eating for years, and there's no way I could ever go back.