[war1025]

You can do whatever you want with cast iron. Just don't leave standing water in it. The whole point of a cast iron pan is that it can take whatever abuse you throw at it.

Yes, you're probably better off not washing it out every time you use it, but if you make chili or something like that, you're going to want to wash it out at the end.

Just after you wash it, put it on the stove to dry it off, then rub some oil into it.