I love cooking with cast iron. Breakfast, lunch, or dinner—it’s my go-to pan. Cast iron is tough and, with proper care, it can last for decades. However, not everything belongs in it. Certain foods can damage your cookware or affect flavor. Here’s what to skip and why. Tomatoes, lemons, and other acidic foods react with cast iron. They can wear down the seasoning and leave a metallic taste. I used to think this was a myth—until I made shakshuka. The tomato-based dish tasted awful, with a harsh, metallic bite. Lesson learned! Fish, strong cheeses, and loads of garlic can leave behind stubborn odors. Baking your cast iron at 400°F for 10 minutes often helps, but not always. Some smells hang on, no matter what. Tip: Use alternative cookware for super fragrant meals. 3. Eggs Don’t Work Well Eggs tend to stick in cast iron, soaking up seasoning and leaving a brown, crusty mess. Even with well-seasoned pans, results are often disappointing.