After you grind your beans, you need a place to let the coffee brew. You can use a pitcher and a cheesecloth, but if you want to really optimize, you can spring for a Toddy cold brew maker. The Toddy requires 12 ounces of grinds and seven cups of water. Coarse-grind your beans and let them sit in the toddy overnight. That's it. On the bottom of the Toddy there is a filter and a stopper that keeps the coffee in the container. After you leave the pitcher sitting on the counter for 12-24 hours, pull the plug and let the coffee concentrate flow into the glass decanter. Since this is a coffee concentrate, mix in a ratio of one parts coffee and two or three parts water or milk—I prefer water.