Here’s an earlier thread about cold brewing:
I take 3 cups of coffee grounds, typical folger’s medium roast, and put it in a gallon pitcher. I add water until almost full, stir it up, seal it (shaking it a few times in ensuing hours) and leave it for at least 12 but usually 24 hours at room temperature.
Then I strain it thru a coffee filter to get the grounds out, chill, and serve over a few ice cubes. Or heat and serve, it warms quickly in the microwave and makes a nice hot cuppa (again without the bitterness of regular brewing). I’ve got a batch brewing now, as I’ll run out of the stuff by Wednesday afternoon if I don’t. The Mrs. and I consume it regularly. I add half and half, the Mrs. adds a bit of sugar and half and half. When I feel fancy I add a few drops of vanilla extract.
I initially diluted my finished product 1:1 with water but I found without the bitterness, I liked my cold brew nice and strong. I love the flavor of the cold brew, far far more than when hot water is used to produce coffee.