[MWJB]

Coffee is acidic. Are you talking about actual acid, or sour/bright coffee?

 

[MWJB]

No I'm talking about coffee that has been brewed deliberately to take most of the acid out. They're called low-acid coffee. There are a few brands on Amazon US, here's the link to one:

https://www.amazon.com/Coffee-Organic-Mellow-Belly-Ground/dp/B073VV4GZB/ref=sr_1_3_a_it?ie=UTF8&qid=1523290667&sr=8-3&keywords=low+acid+coffee

"no technical data"

I think we are confusing acidity (flavour) with acid (composition). It's hard for anyone to make a recommendation if you have a specific medical intolerance & we don't know what that intolerance is.

 

[MWJB]

Coffee has a ph similar to milk around 6 to 6.5....so were really a very long way from affecting the square root of feck all as far as ph is concerned.

I thought it was more like 5.0-5.5?