By Miles SinclairUpdated November 2026
Following clear oxo cold brew instructions lets you make a smooth, low-acid concentrate at home in about 12 to 18 hours of mostly hands-off time. The key is a coarse grind, a steady ratio of coffee to water, and a long, cool steep followed by careful filtering. Get those four things right and your cold brew will taste sweet and chocolatey instead of sour or muddy.
What You Need Before You Start
Gather your equipment and coffee first so the steep can begin as soon as you add water. Most home brewers use a dedicated cold brew pitcher with a built-in filter, but any container and fine-mesh filter will work with the same method.
Shopping for one? See our guide: 6 Best Oxo Cold Brew Makers Compared for Home Brewing (2026).
- Coarsely ground coffee, roughly the texture of raw sugar or sea salt
- Cold or room-temperature filtered water
- A cold brew pitcher or brewer with a filter insert
- A kitchen scale and a measuring cup
- A clean spoon or spatula for stirring
- A refrigerator with room for the pitcher
Step-by-Step Brewing Method
Use a starting ratio of about 1 part coffee to 5 parts water by weight. For a standard 32-ounce pitcher, that means roughly 175 grams of water and 35 grams of coffee, or about 1 cup of grounds to 4 cups of water if you measure by volume. Adjust later once you know how you like it.
- Weigh the coffee and water, then add the grounds to the filter basket or pitcher insert.
- Pour the water slowly over the grounds, wetting them evenly. Stir gently so no dry pockets remain.
- Cover the pitcher and place it in the refrigerator. Steep for 12 to 16 hours. Longer steeps extract more bitterness, so stay within this window for your first batches.
- Remove the filter or lift out the grounds basket slowly, letting the liquid drain without squeezing the grounds.
- If the concentrate is very strong, dilute it with equal parts water or milk before serving.
Adjusting Grind, Ratio and Steep Time
Three variables control the final cup, and changing one at a time makes results easier to read. Use the table below as a starting point.
| Result | Likely cause | Adjustment |
|---|---|---|
| Sour or grassy | Under-extracted, too short a steep | Steep 2 to 4 hours longer |
| Bitter or harsh | Over-extracted or grind too fine | Shorten steep or go coarser |
| Weak | Too much water for the coffee | Increase coffee or dilute less |
| Cloudy or muddy | Fine sediment passing the filter | Use a finer mesh or paper filter and drain slowly |
If your results taste flat after adjusting the steep, check your beans as well. For more on bean choice, see Which Beans for Cold Brew Coffee Work Best? A Practical Guide.
How to Store and Serve Your Cold Brew
Store the concentrate in a sealed glass or plastic container in the refrigerator. Most brewers keep it at its best for about one to two weeks, though flavor gradually fades over time. Serve it over ice, diluted to taste with water or milk. For a broader look at concentrate use, read What Is Concentrated Cold Brew Coffee and How Do You Use It?.
Common Mistakes to Avoid
- Using a fine, espresso-style grind, which clogs filters and over-extracts.
- Steeping at room temperature for too long, which can taste sour or off.
- Squeezing the grounds when removing the filter, which pushes bitter sediment into the brew.
- Skipping the scale and guessing ratios, which makes batches hard to repeat.
- Drinking concentrate straight without diluting it.
Recommended Gear
A dedicated pitcher keeps the process simple and mess-free. Look for a cold brew maker with a fine mesh filter that drains cleanly.
- OXO Good Grips Cold Brew Coffee Maker: Its built-in filter and pitcher design fits the steps above, with the steep and drain handled in one vessel. View on Amazon
- Hario Mizudashi Cold Brew Pot: A glass pot with a removable filter that makes it easy to control steep time and monitor the brew. View on Amazon
FAQ
Do I need to use the OXO brewer for these instructions?
No. The method works in any container with a fine filter, though a pitcher with a built-in filter is simpler to drain without squeezing the grounds.
Why is my cold brew cloudy?
Cloudiness usually comes from fine sediment getting through the filter. Try a finer mesh, a paper filter, or draining more slowly.
How long does the concentrate last?
Stored sealed in the refrigerator, it generally tastes best within one to two weeks. Discard it if it smells sour or off.
Conclusion
With a coarse grind, a 1:5 starting ratio and a 12 to 16 hour steep, you can reliably produce smooth cold brew. Change one variable at a time to fine-tune the flavor. Once your method is consistent, you can experiment with different beans and dilution levels to find your favorite cup.
Related reading
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About Miles Sinclair
Miles Sinclair is part of our editorial team and reviews and edits our coffee beans & brewing methods guides, checking product details against manufacturer specifications and owner feedback.
