Seasoning is polymerized oil bonded to metal through heat. It sounds simple because it is simple, but the execution trips people up. These articles cover oil selection, temperature ranges, common failures like stickiness or flaking, and how to strip and rebuild when things go wrong.
Seasoning

How to Fix Cast Iron Seasoning (Why Most Overcorrect)
Learn how to fix cast iron seasoning based on what actually went wrong. Flaking, sticky residue, rust spots, and uneven color each need a different approach.

Carbon Steel Pan Seasoning Coming Off? It's the Oil
Carbon steel pan seasoning coming off in flakes or patches? It is almost always layer thickness or oil choice. Here is how to fix it.

Can You Put Cast Iron in the Dishwasher? Here's What Happens
Can you put cast iron in the dishwasher? Dishwasher detergent strips seasoning and rust forms fast. Here's what to do if it already happened.

Why Does My Cast Iron Pan Smoke So Much? It's the Oil
Why does my cast iron pan smoke so much every time I cook? Five common mistakes cause it, and they all have simple fixes that stop the smoke in one session.

Cast Iron Skillet Rust? It Looks Worse Than It Actually Is
Found cast iron skillet rust after leaving a pan in the sink? Here's exactly how to remove the rust and restore the seasoning in under an hour.

Cast Iron Skillet Sticky After Seasoning? It's Thickness
If your cast iron skillet is sticky after seasoning, it is almost certainly a thickness problem. Here is how to diagnose the cause and fix it in under an hour.

Best Oil for Seasoning Cast Iron (And What Flakes Off)
After testing multiple oils over three years, here's the best oil for seasoning cast iron, why most recommendations overcomplicate it.