do flavors transfer? I brought out my old cast iron pan and scrubbed it with salt and seasoned it yesterday.  I have used it in the past for a few things but not much.  I want to start using it on a regular basis.  Question:  If I am only using water to "wash" it after cooking, won't some of the flavors transfer to my next item?  For example, if I saute onions and then want to make pancakes next.  Thank you!
First, ensure that you season your pan correctly.  Once your cast iron pan is seasoned; that is, a layers of oil have polymerized on the surface, cleaning it with soap and water is not a problem. While working to build up a good seasoning, you can clean by using salt as an abrasive and wiping out well.  Both of these methods will eliminate the possibility of flavor contamination.