Artago
181
It depends...
Some are enameled, and those are a bit sensitive towards dry burning which may cause discoloration, they need oil/fat/liquid and should not reach working temperatures when dry.
If they are not enameled, I wipe off most of the fat/oil with kitchen paper / a cloth, use hot water (or boil water with a good dash of salt in it, on the stove ) flush with hot water, dry it and wipe it with a neutral oil. One should avoid heat sensitive oils like soy, as heat sensitive oils tends to turn "rancid" when overheated.
For the same reason, I am extra careful with fat fish like mackerel and herring++, as the fat will turn "rancid" if overheated and that will have a negative impact upon future dishes. Would advise to use separate ones for fish...
Enjoy easter