for 5 gallons? RIS going in a cask tomorrow.
Figure it out for yourself. Pour 4 2 oz. samples. Hit each with a measured dose of coffee. Decide which you like best and scale up the amount of coffee.
I’m flying out to washington tomorrow and don’t have time to figure it out myself. 
What has worked for you?
I have a Chocolate Coffee Stout that I used Starbucks Via in. It turned out very nice. No dilution, no beans to mess with. I used 4 of the packets. The final product seemed right at the tipping point of being enough. So I may go with 5 next time. I liked the flavor of Columbia better than the other.
Well, what’s worked is doing what I said! ;) I’ve found that there isn’t one amount that works for every batch. Since coffee is bitter, you need to balance the amount against the bitterness in the beer.
Wish I was going to CBC this year. Go by the Picobrew booth and say hi to everybody for me.
Thanks, I may try that!
Denny, I’m not trying to win gold at NHC, just need a quick turn around on a cask for an event while I’m gone. 10 shots? 12? 20? I have no idea. What have you used in the past. Just give me a starting point.
I’d go in the neighborhood of 10. I guess that too is dependent on your machine. I don’t think that would be overpowering. That is figuring you use 6g/shot.