Easy Cold Brew Coffee Concentrate

"Cold brew coffee takes between 12 to 24 hours (we recommend 16), but it is completely worth it. Just 5 to 10 minutes of hands-on time the night before pays off big in the morning with rich, ultra-smooth coffee concentrate that can be mixed with water (or milk) for a great cup of iced coffee. We recommend a ratio of 1 part coffee concentrate to 2 parts water (mixed and served over ice), but you may find that's too strong (or, if you're a serious coffee drinker, too weak). Once you've got your concentrate, you can play around with a ratio that works for you.One more note, cold brew is highly caffeinated -- more than your regular cup of hot coffee...."