Ree recommends that you use Cafe Bustelo coffee but I was trying to use up a can of coffee that my Grandma had left here when she stayed with us (I didn't want to waste it).
Ree uses these HUGE containers that will hold 12 qts but I just used a pitcher I had on hand and figured out the amount of coffee I would need compared to her large amount. So you just add your coffee (however much you want I used about 1/3 of the can) and add cold water, cover, stir and let it sit overnight. In the morning when you wake up run into the kitchen and stir again and take a deep sniff of that fragrant smell...it smells really good. Now, you have to strain it.
Ree uses layers of cheesecloth inside a strainer but I used coffee filters inside my strainer and it worked out great.
It actually looks kinda gross right now and takes awhile to strain it all through the filters but in the end you have this wonderful smooth, rich concentrate. I then fill my tumbler up with ice and add a little more then 1/2 of my cup of coffee, next comes skim milk, whole milk, or sometimes half and half. I then drizzle vanilla (homemade vanilla), some sweetener of your choice and stir it all up!