Step 1: Add cold filtered water to your large jar or pitcher. The perfect ratio is 1 cup coffee to 4 cups water for a strong concentrate. Pour slowly to fill your jar.

Step 2: Add the coarsely ground coffee to the water. Stir gently for one full minute to make sure all grounds are wet. No dry spots allowed -- they won't extract properly and you'll miss flavor.

Step 3: Cover your container and place it in the refrigerator. Let it steep for 16 to 20 hours. Don't rush this step -- good cold brew takes time. The longer steep means smoother, richer flavor.

Step 4: Set up your strainer with cheesecloth or coffee filter. Pour the cold brew through slowly to separate the liquid from grounds. This gives you smooth, clean coffee without any grit or cloudiness.

Step 5: Store the concentrate in a clean jar. When ready to drink, mix 1:1 with cold water or milk. Pour over ice and enjoy your perfect cold brew!