You can also cold steep a glass for a few minutes. I was surprised how much coffee flavor you can get that way. You'll have to use much more coffee than you would with a longer steep, but it should give you a clue as to how the flavors will work together.Hmmm.......I think I'll cold brew some coffee and try adding different measured amounts to my IPAs on tap to see what might work. I'll keep notes and let y'all know what works and doesn't.
Pour a glass of beer, put some ground coffee in a filter and twist the top of the filter tight and maybe hold it closed with a clothespin, then just put the filter (with coffee inside) into the glass and let it steep for 5min or so.