(Note the *concentrate*, this isn't for straight drinking. Modified from the Pioneer Woman's recipe, because she likes her coffee weaker than R.)
3 cups of ground coffee
Optimizing for surface area affects results, so a rectangular food storage container, loaf pan, cake pan, etc. Plastic, ceramic or glass recommended.
Halving the quantities works fine.
Which ground might make a difference, but we didn't extensively test this.
Freshly ground vs hanging around in the bag for a while did make a difference, but it wasn't necessary for a good result.
We used an 148 ounce snapware container that was 8x6x9inches vaguely, which had more room than needed and a securely fastening lid because I am hella clutzy.
Slowly pour the steeped coffee through the strainer, allowing all the liquid to run through.
I do a little smooshing at the end to get the last bits of liquid out of the grounds.
We strained directly into a rubbermaid 64 ounce pitcher. Don't try to make it in the pitcher, it will be weak. Rinse cheesecloth thoroughly and store for next time.