Adding coffee/whiskey to an imperial stout

[Fugow]

I'm looking to add coffee and/or whiskey at bottling? In using 24 oz bottles. I thought it was about 1.5 oz of whiskey, but I'm unsure of the coffee. What would be the ratio if I attempted an Irish coffee stout. Thanks for the help

 

[JLP]

For a 5 gallon batch people normally range from 4 to 8 ounces of cold pressed coffee. You can either just got the simple route and start this batch at 4 oz. You can also find a beer similar to yours and add a measured amount till you get it just right, and then do the math on the ratio needed.