Published January 1, 2003, Cook's Illustrated (from www.cooksillustrated.com)
Can I cook acidic foods in cast iron pans?The foods most likely to react with iron are acidic ones, such as tomatoes, wine, vinegar, and lemon juice. The acid acts to release some of the metal molecules from the pan surface, causing the cooked food to have a metallic or “off” taste. But will you get the same results with a well-seasoned cast-iron pan? Read the entire post.