Reader Harold contacted us with this question:
My mother has some revere ware. I am noting some blistering on the bottom of the pan. Photo attached. What is causing this?
I suspect it is due to defects in the manufacturing process. If moisture gets trapped between the layers of metal (copper, stainless) it can expand when heated and case the blistering. Given the style of the piece, it was made during the period where the Revere Ware quality was not super great (post 1968), and there are a higher number of defects like this as compared to the period prior to 1968.
I suspect the blistering doesn’t affect the usage of the pan too much, except for hot spots where the blisters occur.
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