How to make cold brew coffee at home
You will need:
- Water (use filtered or bottled water)
- Fine-mesh strainer
- Glass pitcher (or a large mason jar)
- Add 4 cups of water and ½ Cup coarsely ground coffee to your pitcher.
- Give the coffee and water a stir.
- Refrigerate for 12 to 15 hours – don’t be tempted to rush. The wait will be well worth it!
- Strain the mixture through a fine strainer lined with a couple of layers of cheesecloth (rinse the cheesecloth in cold water and wring it out first).
- To serve, start with a one-to-one ratio of coffee to water and/or milk.
Cold brew coffee concentrate will keep, refrigerated for about a week. Do not add milk or sugar prior to storage, as this can hasten spoilage.
It may take a few tries to get your proportions right. You’re working with coffee and water to begin with, and then water and / or milk in the dilution process, so be patient. Also, make sure that you buy coarse grind coffee (or better, grind your own coffee coarsely – kosher salt is about the right consistency). Finer grinds will over extract and produce coffee that is bitter.
Also be mindful of food safety, and keep the concentrate refrigerated, as coffee has organic oils, which will turn rancid if not stored properly.