No I haven't tried anything involving coffee because it is my understanding that ALL coffee (caffeine or decaff) will cause acidity because it raises gastrin levels in the bloodstream which increases acid secretion in the stomach.
So it's not just the acidity of the coffee itself or the caffeine to be worried about. Google something like "coffee acid secretion" for the research papers on this.
I've never heard about a cold brewing technique overcoming this, but I might be wrong...

I guess I'm lucky that I was never a coffee drinker before gastritis struck, so I don't have the urge to find a safe way to drink it.

It does seem to be the holy grail for many though!

coffee :((( I miss the jolt and the taste...but I doubt the cold brew works.

I even thought of crushing caffeine pills and putting them into time release capsules. Problem is, I have no idea where I'd get those. I Googled it and just ended up on some druggie forum...

how i miss coffee

No coffee for me. I can manage tea.

I tried the low acid coffee. After the second day, my stomach was back on fire. I am avoiding it for now. I drink chamomile tea for my hot beverage in the morning.

I still drink my one cup in the morning. Gastritis be damned.

I drink a cup of rooibos tea now & then which really matches the effects of a nice cuppa tea for me.

Also have licorice tea. I don't tolerate chamomile tea too well which is bizarre.

I also tried the low acid coffee, it destroyed my stomach. It was the cause of my last horrible flare...

I drink a half cup every day because I need to take my MIralax and it works best in a cup of hot coffee. I've never seen any reactions to it so far... even if I drink a little more or eat chocolate. But I "think" I have low acid reflux. Still trying to get the doctor to explain my test results.