Simple Cold Brew Coffee Recipe for Home Brewers

Quick answer

• Use a coarse grind. It’s key for cold brew.
• Aim for a 1:8 coffee-to-water ratio. That’s a solid starting point.
• Let it steep for 12-24 hours. Patience pays off.
• Filter it well. Nobody likes gritty coffee.
• Dilute to taste. Cold brew concentrate is strong.
• Use good water. It makes a difference.
• Keep it clean. Simple as that.

Who this is for

• The beginner brewer looking for an easy, foolproof cold brew method.
• Anyone who wants smooth, low-acid coffee without fancy equipment.
• Folks who want to make a big batch and have coffee ready for days.

What to check first

Brewer type and filter type

You don’t need a dedicated cold brew maker. A Mason jar and a fine-mesh sieve work. Cheesecloth or a French press are also good options. Just make sure your filter can handle fine grounds.

You don’t need a dedicated cold brew maker to get started; a simple Mason jar with a lid and a fine-mesh sieve work perfectly for brewing at home.

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Water quality and temperature

Tap water is usually fine, but if yours tastes off, so will your coffee. Filtered water is your best bet. You’ll use cold or room temperature water, so no heating required. Easy mode.

Grind size and coffee freshness

This is huge. You want a coarse grind, like breadcrumbs or sea salt. Too fine, and you’ll get sediment and over-extraction. Freshly ground beans are always better. Stale coffee tastes like, well, stale coffee.

Coffee-to-water ratio

A good starting point is 1:8 by weight. That means 1 part coffee to 8 parts water. So, if you use 100 grams of coffee, use 800 grams (or milliliters) of water. You can adjust this later.

Cleanliness/descale status

Give your gear a good wash. Old coffee oils can turn your smooth brew bitter. If you use a machine, make sure it’s descaled. For simple jar methods, just a good scrub with soap and water does the trick.

Step-by-step (brew workflow)

1. Gather your gear. You’ll need a container (jar, pitcher), a filter (sieve, cheesecloth, French press), and your coffee.

• Good looks like: Everything is clean and ready to go.
• Common mistake: Using a filter that’s too coarse and letting grounds through. Avoid this by double-checking your filter.

2. Measure your coffee. Use your coarse-ground beans. For a 1:8 ratio, weigh out your coffee.

• Good looks like: Accurate measurements. I usually just eyeball it a bit for my morning cup, but for a batch, I measure.
• Common mistake: Guessing the amount of coffee. This leads to inconsistent results.

3. Measure your water. Use cold or room temperature filtered water. For a 1:8 ratio with 100g coffee, measure out 800ml water.

• Good looks like: Clean, cold water ready to go.
• Common mistake: Using hot water. This isn’t cold brew. Stick to cold.

4. Combine coffee and water. Put the coffee grounds in your container. Pour the water over the grounds.

• Good looks like: All grounds are saturated.
• Common mistake: Not saturating all the grounds. Some dry spots mean less flavor extraction. Stir gently if needed.

5. Stir gently. Give it a good, but gentle, stir to ensure all the coffee grounds are wet.

• Good looks like: A uniform mixture.
• Common mistake: Over-stirring or stirring too vigorously. This can break up the grounds and lead to bitterness.

6. Cover and steep. Put a lid on your container. Let it sit at room temperature or in the fridge.

• Good looks like: A covered container, undisturbed.
• Common mistake: Leaving it uncovered. This can let in dust or other odors.

7. Wait. Let it steep for 12 to 24 hours. The longer it steeps, the stronger and more concentrated it will be.

• Good looks like: Patience. I usually aim for about 18 hours.
• Common mistake: Rushing the process. Cold brew needs time to extract flavor slowly.

8. Strain the coffee. This is where your filter comes in. Pour the steeped coffee through your sieve, cheesecloth, or French press.

• Good looks like: Clean coffee, free of grounds.
• Common mistake: Not straining thoroughly. This results in a gritty cup. You might need to strain twice.

9. Dilute (optional but recommended). Your brew is likely a concentrate. Add water or milk to your liking.

• Good looks like: A drinkable coffee strength.
• Common mistake: Drinking it straight. It’s usually too strong. Dilute it to about a 1:1 or 1:2 ratio with water or milk.

10. Serve and enjoy. Pour over ice. Add your favorite additions.

• Good looks like: A smooth, delicious cup of coffee.
• Common mistake: Not serving it cold. It’s cold brew, after all.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If your cold brew tastes bitter, then you likely used too fine a grind or steeped too long, because these lead to over-extraction.
• If your cold brew tastes weak, then you likely didn’t steep it long enough or used too little coffee, because extraction needs time and enough coffee.
• If your cold brew has sediment, then your filter wasn’t fine enough or you didn’t strain properly, because grounds need to be kept out.
• If your cold brew tastes sour, then it might be under-extracted, so try steeping a bit longer or ensuring all grounds were saturated.
• If you want a stronger concentrate, then steep for the longer end of the recommended time (20-24 hours), because longer steeping extracts more solids.
• If you want a milder brew, then use a slightly higher coffee-to-water ratio (e.g., 1:9 or 1:10), because less coffee means less flavor extraction.
• If you notice off-flavors, then check your water quality and the cleanliness of your equipment, because these are common culprits.
• If your cold brew tastes watery even after steeping, then try a slightly finer grind (but still coarse!) or a higher coffee-to-water ratio, because you might not be getting enough solids into the water.
• If you’re in a hurry, then don’t make cold brew, because it’s a slow process. Stick to hot coffee.
• If you get a weird metallic taste, then it’s probably your water, so switch to filtered.

FAQ

What’s the best coffee bean for cold brew?

Medium to dark roasts often work well. They have lower acidity and a richer flavor profile that stands up to the cold brewing process. Experiment to find your favorite.

Can I use pre-ground coffee?

Yes, but it’s not ideal. If you must, choose a coarse grind. Fine grounds will lead to a muddy, over-extracted mess. Freshly ground is always best.

How long does cold brew last in the fridge?

Properly stored in an airtight container, cold brew concentrate can last for about 1 to 2 weeks. Flavor might degrade over time, though.

Do I have to use filtered water?

It’s highly recommended. If your tap water doesn’t taste great on its own, it definitely won’t make your coffee taste great. Filtered water makes a noticeable difference.

Can I make cold brew without a special maker?

Absolutely. A simple Mason jar, a fine-mesh sieve, and some cheesecloth or a French press will do the job perfectly.

What if I don’t have a coarse grinder?

You can try pulsing your beans in a regular grinder for just a second or two, but be very careful not to over-grind. A burr grinder is best for consistency.

Why is my cold brew so acidic?

Cold brew is naturally lower in acidity than hot coffee. If yours tastes acidic, it might be due to using a fine grind, over-extraction, or poor quality beans.

How do I store my cold brew concentrate?

Keep it in an airtight container in the refrigerator. This helps preserve its freshness and prevents it from absorbing other odors.

What this page does NOT cover (and where to go next)

• Specific coffee bean origins and their flavor profiles. (Explore single-origin coffee guides.)
• Advanced cold brew techniques like Japanese-style flash chilling. (Look for guides on advanced brewing methods.)
• Comparisons of different cold brew maker brands and models. (Check out product reviews for specific brewers.)
• Detailed information on coffee bean roasting levels and their impact. (Research coffee roasting guides.)
• Recipes for cold brew-based coffee drinks beyond simple dilution. (Search for cold brew cocktail or dessert recipes.)