We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "Peter C"
saying something like:

Prior to use for the first time give the inside a smear of cooking oil
and rub in, after washing do the same, for me it seems to preserve the
coating.

I do that, and I never wash it with detergent. Just run it under the hot
water and wipe it dry/clean with paper towel.

The same for cast iron pans works well and builds up a non-stick
surface.
--

Dave