Once again, I came up with better search words
after I asked for help from my Permie peeps.
This article cautions one to use non-reactive pots.
A non-reactive pan (pot) is made of:
stainless steel
enamelware
glass
AND a reactive pot...
Leaches into the pickles, giving them a metallic taste. In other words, vinegar reacts with metal, and causes the metals to “leave” the pot and join the vinegar “party.”
Hmmm... This does sound vaguely familiar. I do have stainless steel pots. Yay! I don't have to wait until tomorrow!!
However, if you know of something else, please do chime in!