Should I buy pre-seasoned cast iron cookware?
Cast iron has been the mainstay cookware for generations. It's durable, inexpensive, and simple in materials, has even heating and good heat retention. But there is some controversy over the safety of the iron that may be released into the food. Some say it's a nutrient, or at least that it's harmless, others say the form of iron that is released is toxic. Regardless, it has been used for decades with no proven side effects.
Cast iron will tend to rust, so it needs to be "seasoned" with oil before it is used. If you buy new cast iron, don't buy "preseasoned." Cast iron pans made in China are seasoned with paint that chips off into food. Stick with made-in-the-USA Lodge brand.