How to Make Cold Brew Coffee: Easy Recipe, Ratio & Brewing Tips

Delicious cold brew coffee with milk | Pixel-Shot

Cold brew coffee is one of the easiest ways to make smooth, refreshing coffee at home.

Unlike iced coffee—which is usually brewed hot and then cooled or poured over ice—cold brew is made by steeping ground coffee in cool water for several hours. The slow extraction produces a rich coffee concentrate or ready-to-drink brew that can be served over ice, mixed with milk, sweetened, or used as the base for café-style drinks.

And despite the specialty-coffee reputation, you don’t need expensive equipment.

A jar, coarse-ground coffee, water, a filter, and a little patience are enough.

This guide covers the best cold brew coffee ratio, steeping time, grind size, beans, filtering methods, and an easy recipe you can adjust to make your perfect glass.

⚡ Cold Brew Coffee at a Glance

Question	Quick Answer
Best grind	Coarse
Easy ready-to-drink ratio	1:8 coffee to water
Strong concentrate ratio	Around 1:4 to 1:5
Steeping time	About 12–18 hours
Water temperature	Cool or room-temperature water
Serve	Cold, usually over ice
Best roast	Medium to dark is an easy starting point
Equipment needed	Jar/pitcher, filter, coffee, water
Should concentrate be diluted?	Usually, yes
Refrigerator required after brewing?	Yes

🧊 What Is Cold Brew Coffee?

Cold brew is coffee extracted with cool water over a long period of time.

A basic recipe looks like this:

Grind coffee coarsely.
Combine it with cool water.
Let it steep for several hours.
Filter out the coffee grounds.
Chill and serve.

There is no hot brewing stage.

That distinguishes cold brew from traditional iced coffee.

☕ Cold Brew vs. Iced Coffee

The names are sometimes used interchangeably, but the brewing methods are different.

Cold Brew

Cold brew is:

Steeped in cool water
Brewed for many hours
Usually smooth and full-bodied
Often made as a concentrate
Served chilled

Iced Coffee

Iced coffee is generally:

Brewed hot
Cooled or poured over ice
Faster to prepare
Brighter and more similar to ordinary hot coffee
Often made at extra strength to compensate for melting ice

If you want coffee in five minutes rather than tomorrow morning, see How to Make Iced Coffee: Easy 5-Minute Recipe.

🥣 Easy Cold Brew Coffee Recipe

This recipe produces a strong but approachable ready-to-drink cold brew.

Ingredients

100 grams coarsely ground coffee
800 grams (about 800 ml) cool filtered water
Ice, for serving
Milk, cream, or sweetener, optional

This is a:

1:8 coffee-to-water ratio

Equipment

You’ll need:

Large jar or pitcher
Spoon
Fine-mesh strainer
Coffee filter, cheesecloth, or clean filtering method
Storage container

🧑‍🍳 How to Make Cold Brew Coffee Step by Step

1. Grind the Coffee Coarsely

Cold brew works best with a coarse grind.

Think:

coarse sea salt

rather than:

fine sand or espresso powder.

A coarse grind makes filtering easier and helps prevent the finished coffee from becoming muddy or overly bitter.

If you’re unsure how your grinder should be set, see Coffee Grind Size Guide: The Best Grind for Every Brewing Method.

2. Add the Coffee to Your Container

Place 100 grams of coarse-ground coffee in a large jar or pitcher.

3. Add the Water

Pour in 800 grams of cool filtered water.

Try to wet all the coffee grounds.

4. Stir Gently

Give the mixture a gentle stir so no large pockets of dry coffee remain.

You don’t need to vigorously beat or shake it.

5. Cover and Steep

Cover the container.

Let the coffee steep for approximately:

12 to 18 hours

You can steep it in the refrigerator or begin at cool room temperature and refrigerate afterward.

A refrigerator steep may extract a little more slowly, so you may prefer the longer end of the time range.

6. Filter the Coffee

Pour the mixture through a fine-mesh strainer to remove the largest grounds.

For a cleaner cup, filter it again through:

Coffee filter
Fine cloth
Fine cold-brew filter

Avoid squeezing the grounds aggressively through the filter. Doing so can push extra sediment into the finished drink.

7. Chill

Transfer the filtered cold brew to a clean covered container and refrigerate.

8. Serve Over Ice

Fill a glass with ice and pour in the cold brew.

Add:

Milk
Half-and-half
Oat milk
Sweet cream
Vanilla syrup
Simple syrup

or drink it black.

⚖️ What Is the Best Cold Brew Coffee Ratio?

There is no single perfect ratio because some people make ready-to-drink cold brew, while others make a strong cold brew concentrate.

🥤 Ready-to-Drink Cold Brew Ratio

A good starting point is:

1:8

That means:

1 gram coffee for every 8 grams water

Examples:

Coffee	Water
50 g	400 g
75 g	600 g
100 g	800 g
125 g	1,000 g

This makes a strong cold coffee that many people can drink directly over ice.

💪 Cold Brew Concentrate Ratio

For concentrate, try:

1:4 or 1:5

For example:

100 grams coffee + 500 grams water = 1:5

The resulting coffee is usually too strong for most people to drink straight.

Dilute it with:

Water
Milk
Ice
A combination of all three

A simple starting serving is:

1 part cold brew concentrate + 1 part water or milk

Then adjust to taste.

🧮 Easy Cold Brew Ratio Formula

Once you know your ratio, scaling the recipe is easy.

For a 1:8 brew:

Coffee × 8 = water

So:

100 g coffee × 8 = 800 g water

For concentrate at 1:5:

100 g coffee × 5 = 500 g water

If you’re still getting comfortable with ratios, read How Much Coffee Per Cup? Coffee-to-Water Ratio Guide.

⏱️ How Long Should Cold Brew Steep?

A useful range is approximately:

12 to 18 hours

Some recipes push closer to 24 hours, but longer is not automatically better.

Around 12 Hours

Expect:

Lighter extraction
Cleaner flavor
Slightly less intensity

Around 16 Hours

A good all-purpose starting point.

Around 18 Hours

Expect:

Fuller body
Stronger extraction
More intense flavor

If your cold brew consistently tastes harsh, don’t automatically steep it longer.

Try:

Shorter steep
Coarser grind
Different beans
More water

🧊 Should Cold Brew Steep in the Refrigerator?

It can.

Cold brew can be steeped:

In the refrigerator
At cool room temperature

Refrigerator extraction tends to proceed more slowly because the water is colder.

If you steep entirely in the refrigerator, you may prefer something closer to 16–18 hours.

Either method can produce good coffee.

The most important thing is consistency.

Once you find a time and temperature combination you like, repeat it.

⚙️ What Grind Size Is Best for Cold Brew?

Use a coarse grind.

Cold brew spends many hours in contact with water, so a fine grind is unnecessary and can make filtering difficult.

Too-fine coffee may create:

Muddy cold brew
More sediment
Harsh flavor
Slow filtering

A coarse grind gives you a cleaner, easier-to-filter beverage.

🫘 What Coffee Beans Are Best for Cold Brew?

You can cold brew almost any coffee.

But medium to dark roasts are particularly easy starting points because cold brewing tends to complement flavors such as:

Chocolate
Caramel
Nuts
Brown sugar
Cocoa
Toffee

Medium Roast

Good if you want balance.

Expect:

Chocolate
Caramel
Mild fruit
Nutty sweetness

Medium-Dark Roast

Great for classic cold brew.

Expect:

Dark chocolate
Toasted nuts
Caramelized flavors
Fuller body

Dark Roast

Best if you want a heavy, bold cold brew.

Expect:

Dark chocolate
Roast
Smoke
Bittersweet notes

If you’re shopping specifically for beans, see Best Coffee Beans for Cold Brew: How to Choose the Right Roast and Flavor.

🌸 Can You Use Light Roast for Cold Brew?

Absolutely.

Light roast can produce a more unusual cold brew with:

Fruit
Floral notes
Bright acidity
Tea-like characteristics

It may not deliver the deep chocolatey flavor many people expect from commercial cold brew, but that doesn’t make it wrong.

If you enjoy lighter specialty coffee, it’s worth experimenting.

🌎 Which Coffee Origins Work Well?

Cold brew can emphasize different characteristics depending on the origin.

Brazil

Often a natural fit because Brazilian coffees commonly feature:

Chocolate
Nuts
Caramel

Colombia

A versatile choice with potential flavors such as:

Cocoa
Caramel
Fruit
Nuts

Central America

Can produce balanced cold brews with:

Chocolate
Brown sugar
Fruit
Nuts

Sumatra and Indonesia

Good if you like:

Earthy flavors
Spice
Heavy body
Dark chocolate

There are no strict rules.

Buy beans whose tasting notes already sound appealing to you.

💧 Does Water Matter?

Yes.

Cold brew is mostly water, so water flavor matters.

Use:

Clean tap water
Filtered water
Bottled drinking water

If your tap water has a strong chlorine, metallic, or mineral taste, filtered water may produce noticeably better cold brew.

🫙 Do You Need a Cold Brew Coffee Maker?

No.

A jar and filter work perfectly well.

But a dedicated cold brew maker can simplify the process by including:

Built-in mesh filter
Large pitcher
Easy-pour lid
Refrigerator-friendly shape

These are conveniences, not requirements.

If you already have a large mason jar or pitcher, try the method before buying more equipment.

🧻 What’s the Best Way to Filter Cold Brew?

Filtering affects both flavor and texture.

Fine-Mesh Strainer

Fast and easy.

But it may leave some sediment.

Cheesecloth

Good for removing larger particles.

You may need several layers.

Paper Coffee Filter

Produces the cleanest cold brew.

The downside is that filtering can take longer.

Cold Brew Filter Basket

Convenient if your pitcher includes one.

A good approach is:

coarse strainer first → paper filter second

This removes the bulk of the grounds before the final fine filtration.

😖 Why Does My Cold Brew Taste Bitter?

Possible causes include:

Grind Too Fine

Use a coarser grind.

Steeping Too Long

Try shortening the brew time.

Coffee Too Dark

A very dark roast may be more roasted and bitter than you enjoy.

Try medium or medium-dark.

Ratio Too Strong

Add more water or reduce the coffee dose.

Concentrate Wasn’t Diluted

A 1:4 concentrate can taste overwhelming if you drink it straight.

💦 Why Does My Cold Brew Taste Weak?

Possible causes include:

Too little coffee
Too much water
Steeping too briefly
Extremely coarse grind
Stale beans

Try increasing the coffee or extending the steep slightly.

Change one variable at a time.

🍋 Why Does My Cold Brew Taste Sour?

Cold brew can still be under-extracted.

Try:

Longer steep
Slightly finer grind
More coffee
Different beans

If you’re using a light roast, remember that some perceived acidity may be part of the coffee’s natural flavor rather than a brewing mistake.

🧊 How to Serve Cold Brew Coffee

Cold brew is extremely versatile.

🖤 Black Cold Brew

Fill a glass with ice and add cold brew.

Simple.

🥛 Cold Brew With Milk

Try:

3 parts cold brew + 1 part milk

Adjust as desired.

Excellent milk choices include:

Whole milk
Oat milk
Almond milk
Half-and-half

🍦 Vanilla Sweet Cream Cold Brew

Mix:

Cold brew
Ice
Splash of vanilla syrup
Sweet cream

You can make a simple sweet cream from heavy cream, milk, and vanilla syrup.

🍫 Mocha Cold Brew

Add:

Chocolate syrup
Milk
Cold brew
Ice

Stir well.

🍯 Honey Cold Brew

Honey doesn’t dissolve particularly well in ice-cold coffee.

Mix honey with a little warm water first to make a quick syrup.

Then add it to your cold brew.

🍁 Maple Cold Brew

A small amount of maple syrup dissolves easily and pairs particularly well with chocolatey cold brew.

🧂 Salted Caramel Cold Brew

Combine:

Cold brew
Caramel syrup
Milk
Ice
Tiny pinch of salt

A little salt can help balance sweetness.

☁️ Cold Foam Cold Brew

Top cold brew with homemade cold foam made from:

Milk
Cream
Vanilla
Sweetener

Use a handheld frother until thickened but still pourable.

🥤 How to Dilute Cold Brew Concentrate

If you made a strong 1:4 or 1:5 concentrate, start with:

1 part concentrate + 1 part water

For example:

4 oz concentrate
4 oz water
Ice

For a creamy version:

4 oz concentrate
2 oz water
2 oz milk
Ice

If that tastes weak, use more concentrate next time.

If it’s too intense, add more water or milk.

🧊 Does Ice Change the Ratio?

Yes.

Ice melts.

If your cold brew is already relatively light, a glass full of melting ice may dilute it too much.

Solutions include:

Brew slightly stronger.
Use concentrate.
Use large ice cubes.
Make coffee ice cubes.

☕ Coffee Ice Cubes

This is one of the easiest ways to prevent watery cold brew.

Pour leftover cold brew into an ice-cube tray and freeze it.

The next time you make iced coffee, use coffee cubes instead of plain ice.

As they melt, they add coffee rather than water.

🍬 What’s the Best Sweetener for Cold Brew?

Granulated sugar doesn’t dissolve very easily in cold coffee.

Better options include:

Simple syrup
Vanilla syrup
Caramel syrup
Maple syrup
Liquid sweeteners

Easy Simple Syrup

Combine equal parts:

Sugar
Hot water

Stir until dissolved.

Cool before storing and adding to cold brew.

🧪 How to Find Your Perfect Cold Brew Recipe

Start with:

100 g coffee + 800 g water + 16 hours

Then taste.

Too Strong?

Try:

100 g coffee + 900 g water

Too Weak?

Try:

100 g coffee + 700 g water

Too Bitter?

Try:

Coarser grind
12–14 hours instead of 16

Too Light?

Try:

18-hour steep
Slightly finer grind

Change one thing per batch.

You’ll find your preferred recipe much faster.

📦 How to Store Cold Brew

Once filtered, keep your cold brew:

In a clean sealed container
Refrigerated
Away from strong-smelling foods

For best flavor, make quantities you’ll reasonably drink while they still taste fresh rather than preparing enormous batches.

If the coffee develops an unusual smell, flavor, appearance, or signs of spoilage, discard it.

🧼 Clean Your Cold Brew Equipment

Cold brew leaves coffee oils behind.

After each batch, wash:

Jar or pitcher
Filter
Lid
Strainer
Reusable mesh basket

Coffee oils can become stale and affect future batches.

Rinse reusable filters thoroughly so old grounds aren’t trapped in the mesh.

🆚 Cold Brew vs. French Press

A French press can actually double as a cold brew maker.

Add:

Coarse coffee
Water

and allow it to steep without pressing the plunger.

When brewing is finished, slowly press and pour.

The French press mesh filter will leave more sediment than a paper filter, but many people enjoy the heavier body.

🆚 Cold Brew vs. Hot Coffee

Cold brew generally emphasizes:

Smoothness
Body
Chocolate
Caramel
Lower perceived sharpness

Hot coffee tends to reveal more:

Aroma
Acidity
Floral notes
Fruit
Brewing-temperature nuances

Neither method is inherently better.

They simply highlight different characteristics.

🆚 Cold Brew vs. Espresso

Cold brew concentrate may be very strong, but it is not espresso.

Espresso is brewed:

Quickly
With hot water
Under high pressure
Using finely ground coffee

Cold brew is:

Slow
Cold extracted
Coarsely ground
Steeped for hours

Both can make excellent milk drinks, but they taste very different.

🏕️ Can You Make Cold Brew Without Electricity?

Yes.

That’s one of its advantages.

You don’t need:

Coffee maker
Kettle
Espresso machine
Hot plate

You only need ground coffee, water, and a container.

If you’re camping or traveling, you can prepare it overnight and filter it the next day.

Of course, keeping the finished coffee properly chilled becomes important once it’s made.

❓ Cold Brew Coffee FAQ

What is the best ratio for cold brew coffee?

A 1:8 coffee-to-water ratio is an excellent ready-to-drink starting point. For concentrate, try approximately 1:4 to 1:5.

How long should cold brew steep?

About 12 to 18 hours is a useful range. Start around 16 hours and adjust from there.

Can you steep cold brew for 24 hours?

You can, but longer isn’t automatically better. An extremely long steep can create heavier or harsher flavors depending on the grind, beans, and ratio.

What grind should I use for cold brew?

Use a coarse grind resembling coarse sea salt.

Can I use regular ground coffee?

Yes, but ordinary drip grind may be finer than ideal and can produce more sediment. Coarse coffee is easier to filter.

Can I use pre-ground coffee?

Absolutely. Choose coarse-ground coffee when available.

Can you use whole beans?

The beans need to be ground before brewing. Cold water cannot efficiently extract flavor from intact whole coffee beans.

Do you need special coffee for cold brew?

No. Any coffee can technically be cold brewed.

What roast is best?

Medium, medium-dark, and dark roasts are easy choices for classic chocolatey cold brew. Light roast can work if you prefer brighter fruit and floral characteristics.

Is cold brew stronger than regular coffee?

It depends on the recipe. Cold brew concentrate can be very strong, while ready-to-drink cold brew may be comparable to ordinary coffee. Coffee strength and caffeine content depend on the ratio, beans, serving size, and dilution.

Do you drink cold brew concentrate straight?

Usually not. Most concentrates are designed to be diluted with water or milk.

Does cold brew have to be refrigerated?

After brewing and filtering, keep it refrigerated.

Can I heat cold brew?

Yes. Cold brew describes the brewing method, not a requirement that the finished coffee be consumed cold.

You can dilute concentrate with hot water for a smooth hot drink.

Is cold brew the same as iced coffee?

No. Iced coffee is usually brewed hot and cooled, while cold brew is extracted with cool water for several hours.

Why does my cold brew look cloudy?

Fine coffee particles and oils can create cloudiness. Try a coarser grind and filter the brew through paper for a cleaner appearance.

Why is there sediment at the bottom?

Your filter allowed fine coffee particles through. Paper filtering can significantly reduce sediment.

Can I make cold brew in a mason jar?

Yes. A mason jar works extremely well for small batches.

Can I use a French press?

Yes. A French press is one of the simplest pieces of equipment for cold brewing.

🌟 The Bottom Line

Making cold brew coffee at home is remarkably simple.

Start with:

100 grams coarse coffee + 800 grams water

Let it steep for:

about 12–18 hours

Then filter, chill, and serve over ice.

That’s it.

Once you’ve mastered that basic 1:8 recipe, start experimenting.

Want something stronger?

Move toward 1:6—or make a 1:4 to 1:5 concentrate and dilute each glass individually.

Want something smoother?

Try a medium roast with chocolate and caramel notes.

Want more clarity?

Use a paper filter.

Want a heavier, richer cold brew?

Use a French press or metal filter.

The beauty of cold brew is that it is extremely forgiving.

You don’t need to control water temperature to the exact degree or master an elaborate pouring technique.

Give good coffee plenty of time in cool water, filter it well, and adjust the recipe until it tastes right to you.