Stainless steel makes everything worse. It's the worst material for a beverage vessel

I drink my coffee from a ceramic mug and it's pretty good

I drink coffee from a stainless steel vacuum flask. It tastes fine. I can't tell the difference.

Might sound odd, but give it a try: put a pinch of salt in your coffee. Just a very small one. Helps even with the most terrible coffees.

do you just not have ceramic or glass cups

Nah, coffee in ceramic cups also tastes awesome! You should go to a speciality coffee place and let them recommend something based on what you like :) Don’t go to Starbucks or the like tho

Holy shit you could be onto something.

All the places that have god-awful coffee run that coffee through a stainless steel vessel at some point in the process. Weird.