Mix coffee grounds and water together in a large pitcher. Let sit overnight on the counter top.
Place cheese cloth in a mesh sieve over another large pitcher. Strain coffee mixture through the cheese cloth.
Transfer coffee concentrate to a serving pitcher, let chill in the fridge for several hours.
Add ice to a glass, fill with coffee concentrate, and add any desired extras.
Recipe Notes
**Cardinal Rule** Before I had cheese cloth, I was using coffee filters to strain the grounds from the glorious coffee. While that works in a pinch, it does take a LOT more time. If you can find cheese cloth, that is really the way to go!