Place coffee in a clean french press. Add water and press plunger down about half way. The water should be about 1 1/2 inches from the top, if yours can fit a little more water, its fine to add it.
Store in the refrigerator overnight, for at least 10 hours.
Press the plunger down and enjoy your cold brew! Add ice and any desired cream or sweetener. Store any extra in an air-tight container or jar in the fridge.