Use a cast iron pan for cooking whenever possible (while using tomato sauces and other acidic and moist foods. I read this somewhere and here I have a doubt, actually everybody says not to cook acidic foods like tomato etc. And moist like gravies of Indian curries (with acidic contact too) in an iron pan. So is this should not be obeyed during pregnancy, or does it have good effects during pregnancy, can you please help me understanding this. Thank you.