Cold brew coffee making at home – Complete guide [2026]

Cold brew – or cold-brewed coffee in Hungarian – is one of the biggest coffee revolutions of recent years. It is not only a permanent favorite in specialty coffee shops, but more and more people are discovering at home that slow, cold extraction brings out a completely different flavor profile from coffee beans than traditional hot water methods.

But what makes cold brew different from regular iced coffee? And how can you make it at home in professional quality, even without special equipment? In this guide, you'll get answers to all your questions.

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## WHAT IS COLD BREW? – DIFFERENCE FROM ICED COFFEE

Many people tend to confuse the two terms, but there is a fundamental difference between them.

**Iced coffee:** coffee made with hot water, then poured over ice and chilled. Hot extraction is fast, but the heat extracts compounds from the coffee that can become bitter or tart when cooled.

**Cold brew:** coffee grounds are steeped in **cold water** at room temperature or in the fridge for **12–24 hours**. No heat – only time. This slow extraction creates a completely different compound profile.

### Why does cold brew taste different?

Cold water extracts **bitter compounds** (caffeic acid, certain chlorogenic acid derivatives) and **tannins** less from the coffee beans. In contrast, it excellently extracts **sweet, fruity, and chocolatey flavor notes**. The result: a naturally sweet, silky smooth, low-acidity coffee that almost everyone loves – even those who otherwise do not like black coffee.

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## WHY SHOULD YOU MAKE COLD BREW?

### Less acidic – gentler on the stomach

During cold extraction, 60-70% less acid is extracted from the coffee than with hot water methods. This means that cold brew is **much gentler on the stomach** — many people who experience heartburn or digestive issues from hot coffee can consume cold brew without any problems.

### Naturally sweeter – without sugar

Since cold water primarily extracts the sweet flavor notes (caramel, chocolate, honey, fruit) from the coffee, cold brew is **pleasantly sweet even without added sugar**. This not only makes it healthier but also allows the true character of the coffee bean to shine through.

### Long shelf life

Hot coffee loses its aroma within minutes, but cold brew, **when stored in the fridge, stays fresh for up to 1-2 weeks**. This means you make it once, and for a week, perfect coffee is ready every morning – without having to brew.

### Versatile use

You can vary cold brew concentrate in countless ways: dilute it with water, milk, or plant-based milk, drink it over ice, heat it up as a hot drink, or even use it as an ingredient in cocktails and desserts.

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## WHAT KIND OF COFFEE SHOULD WE USE FOR COLD BREW?

Cold brew is very forgiving when it comes to coffee quality – which is exactly why it's worth choosing **high-quality specialty coffee**, because the bean's true flavor notes come through much better than with hot brewing.

### The best choice: medium or darker roasts with chocolate profiles

**Brazilian, Colombian, and Central American** coffees work excellently for cold brew because:

– **Low acidity** – cold extraction reduces this even further
– **Chocolate, caramel, nutty notes** – these come through particularly well when cold
– **Denser body** – cold brew really benefits from a fuller texture

### What do we recommend from the Gravity Coffee range?

#### 🥇 BRAZIL Extrafino premium fine cup – the king of cold brew
**Price:** from 2,850 HUF (1000g: 10,000 HUF)
[→ View the product](https://gravitycoffee.hu/termek/brazil-extrafino-premium-fine-cup/)

The Brazil Extrafino is the **best choice for cold brew**. The flavor notes of this low-acidity, creamy-bodied Brazilian coffee (roasted hazelnut, soft caramel, silky chocolate) appear even more pronounced in cold extraction. The result is a smooth, sweet, almost creamy-textured cold brew — exactly what most people are looking for.

Recommended packaging: 250 g (2,850 HUF) or 1000 g (10,000 HUF) – the latter can yield up to 4-5 liters of cold brew concentrate.

#### 🥈 NICARAGUA SHG Cavallino – chocolate complexity
**Price:** from 3,250 HUF (1000g: 11,500 HUF)
[→ View the product](https://gravitycoffee.hu/termek/nicaragua-shg-cavallino/)

The **dark chocolate, sweet caramel, and roasted nut** notes of Nicaragua SHG Cavallino become truly intense in cold brew. SHG (Strictly High Grown) comes from a high-altitude growing region, which makes the coffee bean more complex and dense – ideal for slow extraction.

#### 🥉 MEXICO Altura Superior Chiapas Adelita – soft and elegant
**Price:** from 3,150 HUF (1000g: 11,000 HUF)
[→ View the product](https://gravitycoffee.hu/termek/mexico-altura-superior-chiapas-adelita/)

Mexican coffee has soft, nutty notes and citrus freshness. In cold brew, the citrus aromas become more subdued, while the **creamy, nutty character** intensifies. It is an excellent choice for those who want a lighter yet still rich cold brew.

#### Premium choice: ETHIOPIA Washed Sidamo Gr2
**Price:** from 3,900 HUF (1000g: 14,000 HUF)
[→ View the product](https://gravitycoffee.hu/termek/ethiopia-washed-sidamo-gr2/)

The Ethiopian coffee's floral, fruity profile yields a **tea-like elegant** cold brew in cold extraction. This is the best choice if you crave something more exciting instead of classic chocolate notes — the cold brew made from Sidamo Gr2 can even be compared in flavor profile to a well-chilled white wine.

### What coffee should you avoid for cold brew?

Cold brew made from very light roast, highly citrusy, vinegary-acidic coffees often turns out **empty, flat, or unpleasantly „raw”**. These coffees shine better when served hot. When it comes to cold brew, **medium or medium-dark roast single origin coffees with chocolatey and nutty notes** are the winners.

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## BASIC COLD BREW RECIPE – STEP BY STEP

This basic recipe works with any equipment. The ratios and timing are the key.

### What you'll need:

– **100 g** coarsely ground coffee (filter or cold brew grind)
– **800 ml** room temperature filtered water (1:8 ratio)
– **A large glass pitcher or jar** (1 liter)
– **Filter:** fine mesh strainer + paper filter, or cheesecloth/muslin
– **Kitchen scale** (for precise dosing)

Variations of ratios:

STEP 1: GRINDING THE COFFEE

One of the most important rules of cold brew: **coarse grind**. The grind size should be slightly coarser than granulated sugar, but not whole beans – rather similar to the texture of **coarse sea salt**.

If you grind the coffee to a powder, it will over-extract during the long steeping and become bitter and muddy. If you're not confident in your grinder, you can request a **coarse cold brew grind** for your coffee in the Gravity Coffee webshop.

STEP 2: MIXING COFFEE AND WATER

Put the coarsely ground coffee into the pitcher and **pour room-temperature water over it**. Do not use hot water! Stir with a spoon so that every particle is wet. Cover the pitcher with a lid or aluminum foil.

STEP 3: STEEPING

Leave the pitcher **at room temperature for 12-24 hours**. The timing depends on how strong you want it:

– **12-14 hours:** lighter, fruitier, less full-bodied
– **16-18 hours:** sweet, silky, ideal for general consumption (this is the sweet spot)
– **20-24 hours:** intense, dense, more chocolatey – perfect as a concentrate

> 💡 **Pro tip:** Experiment with the steeping time! Every coffee bean behaves differently. Brazil Extrafino, for example, reaches its sweet spot after 18 hours, while Ethiopia Sidamo can be ready in as little as 16 hours.

STEP 4: FILTERING

Carefully pour the mixture through a **fine mesh strainer** (or through cheesecloth) into another clean pitcher or jar. If you also use a paper filter under the strainer, you'll get an even cleaner, sediment-free coffee.

The filtered liquid is the **cold brew concentrate** – dark, dense, almost syrupy in texture.

STEP 5: DILUTION AND STORAGE

Dilute the strong concentrate (1:4 ratio) **1:1 with water, milk, or plant-based milk** when serving. The basic cold brew (1:8 ratio) can be drunk on its own with ice.

Store in the refrigerator in a well-sealed jar. **It stays fresh for up to 10-14 days** – though in reality, it usually runs out sooner!
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COLD BREW PREPARATION METHODS

Traditional (glass pitcher + filter)

The simplest home method: a 1-liter glass pitcher, coarse-ground coffee, room temperature water – that's it. No special equipment needed. Filtration can be done with a paper filter (cleaner, thus 1-2 days longer shelf life) or a sieve (faster, less clean).

**Advantage:** Cheap, practically free if you have a pitcher at home.
**Disadvantage:** Filtering can be a bit tedious if you don't have a good filtering tool.

French press cold brew

A French press is not just for hot coffee! Put the coarse grind into the French press, add water, press the plunger down so that it stays on the surface of the water (do not press it all the way down), and let it steep for 16-18 hours. The next day, press the plunger all the way down – the coffee is ready.

**Advantage:** Filtering is automatic, no separate filter needed.
**Disadvantage:** The size of the French press limits the quantity.

Cold brew makers

If you often drink cold brew, it's worth getting a dedicated **cold brew maker**. These typically consist of a glass carafe and a built-in fine filter basket into which you load the coffee. After steeping, you simply remove the filter basket — the coffee is clean and ready to drink.

**Advantage:** Convenient, clean, aesthetic.
**Disadvantage:** One-time investment, but worth it in the long run.

Filtered slow drip cold brew

A professional method where ice water drips through the coffee grounds – for up to 8-12 hours. The result is an extremely concentrated, clean, wine-like coffee. This requires a special device (e.g., Yama cold brewer or Hario Mizudashi).

**Advantage:** The cleanest, most complex flavor.
**Disadvantage:** Expensive equipment, slow process.

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COLD BREW VARIATIONS

Perfect dilution ratios

You can drink cold brew concentrate in many ways:

| Drink type | Concentrate | Diluent | Ice |
|————-|————-|——–|—–|
| Classic cold brew | 100 ml | 100 ml water | Lots of ice |
| Cold brew latte | 100 ml | 150 ml milk | Ice |
| Cold brew black | 120 ml | 80 ml water | Ice |
| Nitro-style (at home) | 150 ml | 50 ml water | None (serve cold) |

Flavoring

Cold brew can be excellently varied with flavorings:

– **Vanilla cold brew:** add 1-2 drops of vanilla extract to the finished coffee
– **Cinnamon iced coffee:** steep a cinnamon stick in the concentrate in the fridge
– **Matcha cold brew latte:** 100 ml cold brew + 100 ml matcha milk + ice
– **Honey-citrus:** 1 tsp honey + freshly squeezed orange juice (30 ml) + cold brew

Coffee cocktails with cold brew

– **Cold brew tonic:** 100 ml cold brew + 100 ml tonic water + ice + lemon slice
– **Espresso martini home version:** 60 ml cold brew + 45 ml vodka + 30 ml Kahlúa + ice – shake it up
– **Cold brew old fashioned:** 120 ml cold brew + 15 ml bourbon + 1 tsp maple syrup + orange peel

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COLD BREW STORAGE AND SHELF LIFE

Store the cold brew concentrate in the **fridge, in a well-sealed glass container**. This way:

– It stays fresh for **1-2 weeks** (the exact time depends on the coffee's freshness and hygiene conditions)
– **Don't leave it at room temperature** – bacteria multiply faster in cold-brewed coffee
– **Chill it as soon as possible after filtering** – concentrate left at room temperature loses its flavor faster
– **Don't freeze it** – after thawing, the coffee loses its texture and most of its aromas

How do you know it has gone bad?

Signs of spoiled cold brew: a strange, vinegary smell, a moldy aftertaste, or if a film forms on the surface of the coffee. If you notice any of these, it's better to make a fresh batch.

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COLD BREW VS. NITRO COLD BREW

Nitro cold brew is nothing more than cold brew concentrate with **nitrogen gas** (N₂) mixed in using a tap system. The microscopic nitrogen bubbles give the coffee a creamy, dense texture – similar to stout beers.

**The differences:**

If you want to try it at home, **N₂O cartridge cream whippers** are available, with which you can even make nitro cold brew at home.

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COLD BREW TIPS AND TRICKS – AVOIDING COMMON MISTAKES

Don't use fine grind!

The most common mistake. Fine grinding during a long steep results in **over-extracted, bitter, muddy** coffee. Always choose a **coarse** (filter cold brew) grind.

Don't rush it!

Cold brew is **not fast**. If you take it out after 4-6 hours, the coffee will be watery, sour, and undrinkable. Minimum 12 hours – even 24 is possible. Patience yields sweet cold brew.

Use good quality water

Water makes up 80-90% of cold brew. If your tap water tastes bad, use filtered or mineral water. Chlorinated tap water can ruin even the best coffee.

Measure the exact amounts!

„Roughly” doesn't work with cold brew. Use a **kitchen scale** to measure the coffee and water precisely. Sticking to the ratios is the foundation of consistent quality.

Store in the fridge and consume within 2 weeks

Cold brew lasts longer than hot coffee, but not forever. Don't exceed the 10-14 day limit – the coffee's aroma keeps deteriorating even in the fridge.

Experiment boldly!

Cold brew is one of the **most forgiving coffee brewing methods**. Even if you mess up the ratios, it's rarely undrinkable. Try it with different coffees, ratios, and steep times – and find your own perfect cold brew.

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FREQUENTLY ASKED QUESTIONS (FAQ)

**How much caffeine is in cold brew?**
Cold brew concentrate generally **contains more caffeine** than hot coffee – the long steeping time extracts more caffeine over time. A 250 ml serving can contain about 150-250 mg of caffeine, depending on the coffee beans and strength. This naturally decreases when diluted.

**Can cold brew be drunk hot?**
Yes! You can also warm up the cold brew concentrate. Just be careful **not to boil it** – only warm it slightly. Boiling destroys the delicate aromas gained through cold extraction.

**Can you make cold brew from decaffeinated coffee?**
Yes, and it works excellently. Decaf coffee becomes especially sweet and smooth as cold brew. If you find a decaf specialty coffee in the Gravity Coffee range, it's also an excellent cold brew base.

**Why is my cold brew cloudy/sedimented?**
It's probably **too fine a grind**, or you didn't filter it thoroughly enough. Try grinding the coffee coarser, and use a paper filter under the sieve.

**What grind should I ask for in the Gravity Coffee webshop for cold brew?**
In the web shop, when selecting a product, you can specify the **grind size alongside the packaging**. For cold brew, request a pour-over (filter) or specifically a cold brew grind. A coarse grind pairs excellently with the Brazil Extra Fine or the Nicaragua Cavallino.

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## SUMMARY

Cold brew is one of the **simplest and most visually striking** coffee brewing methods you can try at home. No expensive equipment is needed, the time investment is minimal (the steeping happens on its own), and the result is a smooth, sweet, low-acidity coffee that will be hard for store-bought iced coffees to compete with.

The most important thing you need is: **good quality, coarsely ground coffee** – and you can find this in the [Gravity Coffee webshop](https://gravitycoffee.hu/). Whether you choose the creamy, chocolatey [Brazil Extrafino](https://gravitycoffee.hu/termek/brazil-extrafino-premium-fine-cup/) or the complex [Nicaragua Cavallino](https://gravitycoffee.hu/termek/nicaragua-shg-cavallino/), go ahead and start – your first batch of cold brew probably won't be your last.