The basics for cold brew bean blends:
To brew a concentrate, start with coarsely grinding our beans. We recommend a 1:5 ratio of grounds to water and to steep the grounds between 15 and 21 hours at room temperature. We recommend starting with 18 hours. Once you are finished steeping, strain the grounds from the liquid, and place the concentrate in your refrigerator. You can then blend the concentrate with water using a 1:3 ratio of concentrate to water or 1:2 ratio depending upon your personal preference. The cold brew concentrate kept in your fridge should last 2 weeks.
We suggest when looking at ratios you start with ratios based in weight. For example: a 1:5 ratio would equate to 1 liter (1000ml) of water to 200 grams of coffee grinds. When experimenting with weight ratios we tend to use metrics because the numbers are easier to work with. 1 ml is equal to .033814 ounces. Once you have liquid to liquid ratio, like 1:3 of concentrate to water, you can use parts or stick with liters or ounces. At that point we tend to weigh out the ounces on a scale and our scale is in ounces...so that is easier for us. In the end, it really comes down to what you are comfortable with.
Recommended grind size:
We recommend a coarse grind size. Below we compare what an espresso grind, a regular drip coffee grind, and a cold brew coarse grind looks like. We recommend grinding your coffee beans to a coarse grind.
Here is a closer look at the recommend coarse grind for cold brew coffee:
We like to use water we know. So either a really great filter in the sink, house, etc. or you can get Spring water from the store. The most consistent water will most likely be store bought water like Ice Mountain® or whatever water you enjoy. We state this because filters will wear out over time and as they wear out they will filter less and less, hence not being consistent over spans of time. We recommend steering clear of distilled water, since cold brew is about pulling solubles out of the bean and binding them to minerals in water. Distilled water does not work well here. We have found the taste to be very "hollow" and less desirable.
We always recommend using freshly roasted beans. That ensures you are consistently getting the flavors you expect. That being said, given the nature of the extraction of cold brew. Cold brew coffee is more forgiving when it comes to older roasted beans. So try it and you may be OK with the outcome.
You can steep your cold brew coffee at room temperature or you can brew it in the refrigerator (usually takes longer due to the lower temperature). If you are brewing at room temperature as soon as you are done steeping your brew. Place it in the refrigerator and keep it cold until it is gone. Keeping your cold brew coffee in the refrigerator reduces the chances of growing bacterial cultures, etc in your brew and becoming ill. Most places consider cold brew coffee that has been kept refrigerated good for about 2 weeks. If you want to be conservative then brew enough that lasts you a week at a time.
Remember, if it tastes different or funny then pitch it, wash your containers thoroughly and brew some more.
Once you have your cold brew coffee, how do you like it? Hot or cold? There is a misconception that cold brew coffee can only be served cold. That is not the case, you can consume it how you would like. If you decide to serve it hot, we recommend warming the glass and heating but not boiling it. The higher temperatures will change the flavor profile and we tend to enjoy the cold brew coffee that is not boiled but "hot" to your preference.
The packaging (bag, label, adhesive, valve) are 100% compostable, just make sure you remove the tin tie before composting.