Can I Re-Enamel a Cast Iron Pot
I always enjoy getting questions from visitors. This one was a nice thought provoking one. While primarily a “Black Iron” aficionado, enamel has a certain appeal both historically and process wise.
Evelyn Writes:
Can cast iron pans be re-enameled?
Dear Evelyn,
In short no.
The enameling process for cast iron cookware require materials and temperatures not available in the home. Producing a good enameled pot requires the application of a suitable glaze applied evenly to the surface of the iron and fired at very high temperatures. The glazing material, application, and firing are all critical in producing the pot as both the pot and the glaze require the same thermal expansion rates. Otherwise, the glaze will just crack and come off the surface. Good enameled cast iron’s durability and chip resistance is the result of years of manufacturing expertise and material development which is why they are more expensive.
Without knowing why you want to re-enamel your pot (I’m guessing a surface chip) I would suggest discarding it. For the same reason you wouldn’t continue to use slightly cracked glass bake ware, it’s going to degrade and potentially contaminate your food. There may be some workarounds to extending the life of the pot, but as yet I have been unable to locate a satisfactory one. Rusting of the chipped surface is primary of course, but further flaking of the enamel is another possibility making replacement desirable.
Good Luck, and Happy Cooking,
On behalf of the Cast Iron Pan Store,
Ron