Quote:
Originally Posted by dave walsh
There was a tip in the RSGB mag. that the white deposit could be removed by boiling the item with a cabbage.
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Yes, I recall reading that, too. Boiling cabbage (same with other green vegetables
*) will release oxalic acid
*. Apparently, this causes a mild reaction with the aluminium and slightly etches the surface, thus removing the oxidation.
Citric acid monohydrate could also be worth a try: it does an excellent job of removing limescale from kettles.
* Rhubarb leaves are high in oxalic acid. Seems that the darker the green, the higher the yield.
* Please note that oxalic acid is harmful if ingested, even in small doses - usually causing kidney failure.
Al.