Watch: How To Make Cold Brew Coffee At Home Easily

Quick answer

• Use a coarse grind.
• Stick to a 1:4 to 1:8 coffee-to-water ratio.
• Let it steep for 12-24 hours.
• Filter it well.
• Dilute to taste.
• Store it in the fridge.

Who this is for

• You’re tired of bitter, acidic coffee.
• You want a smooth, mellow coffee concentrate.
• You’re looking for a simple way to make coffee ahead of time.

What to check first

Brewer type and filter type

You’ve got options here. A simple jar and a fine-mesh sieve work. Dedicated cold brew makers are slick, too. Paper filters can work, but they can be slow and clog easily. Cloth filters or metal mesh are usually better for cold brew. Make sure whatever you use can handle a coarse grind without letting too much sediment through.

A simple glass jar with a lid is all you need to get started with cold brew. You can find great options online that are perfect for this brewing method.

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Water quality and temperature

Tap water is fine if it tastes good. If not, filtered water is your friend. Cold brew uses cold water, obviously. Room temperature is okay, but colder is generally better for the extraction process. No need to get fancy with precise temperatures here.

Grind size and coffee freshness

This is huge for cold brew. You want a coarse grind, like breadcrumbs or even coarser. Too fine, and you’ll get sludge and over-extraction. Freshly roasted beans are always best, but for cold brew, even slightly older beans can work well because the long steep time mellows things out.

Coffee-to-water ratio

This is where you control the strength. A common starting point is 1:4 (one part coffee to four parts water) for a concentrate. You can go as low as 1:8 for a more drinkable ratio straight up, or even higher if you like it super light. Experiment to find your sweet spot.

Cleanliness/descale status

Give your gear a good wash. Old coffee oils can go rancid and make your cold brew taste… off. If you have a dedicated cold brew maker, check the manual for any descaling recommendations, though it’s less of an issue with cold water.

Step-by-step (brew workflow)

1. Measure your coffee.

• What “good” looks like: You’ve got the right amount of coarsely ground coffee for your desired batch size. For a 1:4 ratio and a 32 oz jar, you’d use about 8 oz of coffee grounds.
• Common mistake: Using a fine grind meant for espresso. This will lead to a muddy, bitter mess. Stick to coarse.

2. Add coffee to your brewing vessel.

• What “good” looks like: All the grounds are ready to meet the water. Whether it’s a jar, a French press, or a dedicated maker, the coffee is in place.
• Common mistake: Not having a vessel large enough. Cold brew expands a bit, and you need room to stir.

3. Pour in cold water.

• What “good” looks like: The water is saturating all the coffee grounds evenly. Start by pouring about half the water, stir, then add the rest.
• Common mistake: Dumping all the water in at once and not stirring. This can lead to dry pockets of coffee.

4. Stir gently.

• What “good” looks like: All the grounds are wet and mixed with the water. A gentle stir with a spoon or paddle is all you need.
• Common mistake: Over-stirring or using a whisk. You’re not trying to aerate it; just ensure saturation.

5. Cover and steep.

• What “good” looks like: Your vessel is sealed and ready to sit. Pop it in the fridge or on the counter.
• Common mistake: Leaving it uncovered. This lets in dust and other fridge smells.

6. Wait (12-24 hours).

• What “good” looks like: Patience. Longer steeps mean stronger flavor. 12 hours is light, 24 is robust.
• Common mistake: Impatience. Rushing the steep time will result in weak, underdeveloped coffee.

7. Prepare to filter.

• What “good” looks like: You have your filtering setup ready. This might be a fine-mesh sieve lined with cheesecloth, a dedicated cold brew filter bag, or a paper filter in a pour-over cone (though this can be slow).
• Common mistake: Using a filter that’s too fine initially. This can clog and overflow.

8. Filter the concentrate.

• What “good” looks like: You’re slowly pouring the steeped coffee through your filter setup. It’s a slow process, and that’s okay.
• Common mistake: Trying to force the liquid through. Let gravity do the work. If it’s too slow, your grind might be too fine.

9. Double-filter if needed.

• What “good” looks like: You’ve poured the liquid through a second time, or used a finer filter, to catch any remaining sediment.
• Common mistake: Skipping this step if you want super-clean coffee. A little grit is fine for some, but purists want it clear.

10. Dilute to taste.

• What “good” looks like: You’ve got a glass with ice, poured some cold brew concentrate, and added water or milk. Start with a 1:1 ratio of concentrate to water/milk and adjust.
• Common mistake: Drinking the concentrate straight. It’s potent! Dilute it unless you really like it strong.

11. Store and enjoy.

• What “good” looks like: Your cold brew concentrate is in an airtight container in the fridge, ready for your next cup. It should last 1-2 weeks.
• Common mistake: Leaving it out on the counter. It’s brewed; now it needs to be chilled.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If your cold brew tastes weak, then increase the coffee-to-water ratio (use more coffee) or steep for longer.
• If your cold brew tastes bitter, then use a coarser grind or reduce the steeping time.
• If your filters are clogging constantly, then your grind is too fine. Coarsen it up.
• If you want a cleaner cup, then filter twice or use a finer filter material.
• If you prefer a more acidic, brighter coffee, cold brew might not be your go-to. Consider a pour-over.
• If you’re making a large batch, then consider a dedicated cold brew maker for easier filtering.
• If you have hard water, then using filtered water can improve the taste of your cold brew.
• If you’re short on time, then 12 hours is the minimum steep for decent results, but 18-24 is better.
• If you like a creamy texture, then add milk or cream when diluting, not during the brewing process.
• If you notice a sour taste, then your coffee might be too old or the water temperature was too high during brewing (less common with cold brew).

FAQ

How much coffee do I use for cold brew?

A good starting point is a 1:4 ratio of coffee to water for a concentrate. For example, 8 ounces of coffee grounds to 32 ounces of water. You can adjust this ratio based on how strong you like it.

What kind of coffee beans are best for cold brew?

Medium to dark roasts often work well because their inherent flavors are less likely to get lost in the long steep time. However, you can use any coffee you enjoy. Freshness is always a plus.

Can I use hot water to speed up cold brew?

No, that defeats the purpose of cold brew. Using hot water will result in a different brewing method, like hot drip coffee, and will extract different compounds, leading to a more acidic and bitter taste. Stick to cold or room temperature water.

How long does cold brew last?

Stored properly in an airtight container in the refrigerator, cold brew concentrate can last for about 1 to 2 weeks. The flavor will gradually degrade over time.

Why is my cold brew muddy?

This is usually due to using a grind that’s too fine. The fine particles pass through the filter more easily. Make sure you’re using a coarse grind and a suitable filter.

Can I make cold brew without special equipment?

Absolutely. A simple mason jar and a fine-mesh sieve lined with cheesecloth or a paper coffee filter will do the trick. It just takes a little more patience during the filtering stage.

What’s the difference between cold brew and iced coffee?

Iced coffee is typically hot-brewed coffee that has been cooled down and served over ice. Cold brew is brewed with cold water over a long period, resulting in a smoother, less acidic concentrate.

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

• Specific cold brew maker reviews and comparisons.
• Advanced techniques like Japanese-style iced coffee (flash chilling).
• Detailed explanations of coffee extraction chemistry.
• Recipes for cold brew cocktails or other mixed drinks.
• Home roasting coffee beans for cold brew.