How much water should I use for one bag of cold brew? Bekah September 09, 2019 19:51 Updated Follow It's 5 & 1/4 cups of water. Please check out the instructions included with the cold brew for more details. :) For more info and tips - https://driftaway.coffee/coldbrewtips/ Related articles I use my regular coffee subscription coffee to make cold brew - should I get this? How do I use my points? Are your coffee Fair Trade, Organic, RainForest Alliance certified? Comments 0 comments Article is closed for comments.