Ingredients:
- 250 g Freshly Roasted Coffee Beans (coarsely ground)
- 1 Litre Filtered Cold Water
Instructions:
- Grind the Beans: Weigh out the coffee beans. If not pre-ground, grind them to a very coarse consistency (the texture of breadcrumbs or coarse sea salt). Avoid a fine grind, which leads to sludge and bitterness.
- Combine Ingredients: Add the coarse coffee grounds to your large container or pitcher. Gently pour the measured, filtered water over the grounds.
- Ensure Saturation: Use a long spoon or spatula to gently stir the mixture until all the grounds are fully saturated ('bloomed'). Do not over-mix, as this can encourage bitterness.
- Steep: Cover the container tightly and place it in the refrigerator. Allow it to steep undisturbed for 12 to 18 hours (16 hours is often the sweet spot for balance).
- First Strain (Rough Filter): Place a fine-mesh sieve over a large, clean bowl or second pitcher. Slowly pour the coffee mixture through the sieve. Discard the spent grounds.
- Second Strain (Fine Filter): Set up a second filter for a cleaner finish. Line your sieve with a double layer of cheesecloth, or place a paper filter inside a funnel resting over your final storage container.
- Filter Slowly: Pour the roughly strained liquid through the finer filter. This process may take 10–15 minutes. Do not press down on the grounds or the filter.
- Store the Concentrate: Transfer the finished, clear concentrate into an airtight container or pitcher. Seal and label with the date. Store in the refrigerator.
- Dilute and Serve: Fill a glass with ice. Add 1 part cold brew concentrate (e.g., 120 ml). Add 1 to 2 parts of your chosen dilution liquid (water, milk, etc.). Stir well and adjust concentration or sweetener to taste.