I just got a really cool custom immersion chiller and I had a few questions before I use it. There is black discoloration around where it is soldered, on 3 sides there is a copper wire soldered to the coils to provide support as it is pretty large. I cleaned it several times with barkeepers and then boiled the whole thing for 15-20min, but did not make much progress on removing the discoloration.
1. Do you see any issues with using this? I am not concerned about sanitation, bc it would be boiled, more concerned about any potential off flavors / health issues?
2. Should I soak it in star san to continue to try to clean it?
Just wanted to throw this out to see if I am inventing problems or not. Would like to be able to use this as it works very well!