It is generally not recommended to put cold water in a hot cast iron pan to cool it down quickly. Rapid and extreme temperature changes can cause thermal shock to the cast iron, leading to potential cracking or warping of the pan. Additionally, it may affect the seasoning, which is the natural non-stick coating on the surface of a well-seasoned cast iron pan.
If you need to cool down a hot cast iron pan, it's best to allow it to cool naturally on its own. You can remove it from the heat source and place it on a heat-resistant surface, such as a trivet or cooling rack, and let it cool down gradually.
To prevent food from sticking, it's generally recommended to use proper cooking techniques when using a cast iron pan. Preheating the pan before adding food and using a sufficient amount of cooking oil or fat can help create a natural non-stick surface. It's also important to avoid using metal utensils that can scrape or damage the seasoning.
If the pan does become stuck-on or has food residue, it's best to gently clean it using warm water, a soft sponge or brush, and mild dish soap if needed. Avoid using harsh abrasives or soaking the pan for extended periods, as these can potentially damage the seasoning.
Remember that proper care and maintenance of a cast iron pan, including regular seasoning and cleaning, can help preserve its non-stick properties and prolong its lifespan.