- Fresh roasted coffee
- A scale
- A cold brew device (a basic mason jar works in a pinch)
- Filtered water
It is important to use good water when brewing. Water with a chlorine taste or odor, or other heavy chemical tastes and odors, will import those tastes and odors into your coffee. You can use bottled water, or buy a simple carbon filter to attach to your sink if you live in an area with highly treated water.
The main benefit to buying a cold brew device, like in the picture, is that it is easier to strain out the coffee grounds by simply removing the filter. If you are using a plain jar, you will have to strain the coffee through a fine sieve, or coffee filter, before drinking.