THE SHORT ANSWER
Cold brew uses cool water and a long steep instead of hot extraction. This ready-to-dilute home recipe starts with 100 g coarse coffee and 800 g cold drinking water in the refrigerator.
- Starting recipe
- 100 g coffee / 800 g input water
- Grind
- Coarse
- Time
- 12–18 hours refrigerated, plus filtering
- Temperature
- Refrigerator temperature
What you’ll need
- Clean covered food-safe jar
- Scale and a coarse strainer
- Paper coffee filter and clean container
Make it, step by step
- Combine 100 g coarse coffee with 800 g cold drinking water in a clean jar. Stir to wet all the grounds.
- Cover and refrigerate for 12–18 hours. Do not leave a milk-based mixture steeping on the counter.
- Strain out the grounds, then pass the liquid through a paper filter if you want a cleaner texture.
- For a first serving, mix equal amounts of strained coffee and water or milk. Taste and adjust: dilution depends on the coffee and your preference.
- Keep the filtered coffee covered and refrigerated. Make a small batch for prompt use; add milk only to the portion you will drink.
Make it yours
The grounds retain liquid, so 800 g input water will not produce 800 g concentrate. A smooth taste does not tell you the caffeine content.
These are home starting points, not lab-tested guarantees. Follow the safety and capacity guidance for your exact equipment.
Sources & further reading
Source links support the factual context. Our home recipes and tasting suggestions are identified as starting points.