# Cold Brew Coffee Concentrate Recipe: Make and Store for Easy Use

> Make cold brew coffee concentrate at home, store it for up to two weeks, and dilute to taste whenever you want. Includes ratios, steeping times, and serving variations.

**Canonical URL**: https://coffee-guide.jp/en/recipe/cold-brew-concentrate-recipe  
**Category**: Coffee Recipes  
**Published**: 2026-05-29  
**Updated**: 2026-05-29  
**Author**: Coffee Guide Editorial  
**Tags**: cold-brew, concentrate, storage, recipe  

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Cold brew concentrate is one of the smartest coffee prep habits you can build. Make a large batch on the weekend, keep it in the fridge, and enjoy café-quality cold brew every morning by pouring over ice and adding water or milk. No brewing required during the week.

This guide covers the complete process: ratios, steeping time, grind settings, straining, storage, and a handful of great serving variations.


### Cold Brew Coffee Concentrate Recipe: Make and Store for Easy Use

難易度: beginner / 時間: 15分 / 分量: 1 serving

**材料**

- Coarsely ground coffee: 100g
- Cold filtered water: 500–600ml

**手順**

1. 材料を準備する
2. 抽出する
3. 仕上げて完成


## What Is Cold Brew Concentrate?

Cold brew concentrate is cold brew brewed at double or triple strength — using more coffee per unit of water — so you can dilute it at serving time to your preferred strength.

- **Regular cold brew**: 1g coffee per 8–12ml water (drink as-is)
- **Cold brew concentrate**: 1g coffee per 4–6ml water (dilute before drinking)

The benefits of concentrate over regular-strength cold brew:
- Make a larger batch in less container space
- Customize strength on the fly by varying your dilution ratio
- Stays fresh longer (less oxidation surface area)
- Works easily as an ingredient for coffee cocktails, desserts, and baking

## Basic Concentrate Recipe

### Ingredients (Makes ~500ml concentrate)

- Coarsely ground coffee: 100g
- Cold filtered water: 500–600ml

**Ratio**: 1g coffee to 5–6ml water (1:5 to 1:6)


### Brewing Recipe

**Method**: Cold Brew Coffee Concentrate  
**Total time**: 12–24 hours steeping + 15 min prep

1. **Grind coffee coarsely — slightly finer than French press** — Coarser grinds = cleaner filtration
2. **Add grounds to a large jar or pitcher** — A 1-liter mason jar works perfectly
3. **Pour cold water over the grounds and stir to saturate** — Ensure no dry pockets of coffee
4. **Cover and refrigerate (or steep at room temperature for shorter time)** — Fridge = 12–24 hours; room temp = 8–12 hours
5. **Remove after target steeping time** — Taste-test at 12 hours and adjust from there
6. **Strain through a paper coffee filter** — Filter twice for a cleaner, less cloudy result
7. **Transfer to a clean sealed bottle or jar** — Ready to use immediately or store for up to 2 weeks


## Steep Time vs. Flavor

| Steep Time | Character | Best For |
|-----------|-----------|---------|
| 8–10 hours | Light, bright, mild | Milk-based drinks |
| 12–16 hours | Balanced sweetness and body | General use |
| 18–24 hours | Rich, deep, strong | Black drinking; desserts |
| 24+ hours | May become bitter/over-extracted | Use with caution |

**12–18 hours** in the refrigerator consistently produces the best balance for most beans and preferences.


> 💡 **TIP**
>
> **Room Temperature vs. Refrigerator Steeping**
> Room-temperature steeping (around 20°C/68°F) is faster — 8–12 hours — and tends to produce slightly brighter, fruitier flavors. Refrigerator steeping (around 5°C/41°F) takes longer but yields a cleaner, smoother result. For safety, steep in the refrigerator if you'll be going beyond 12 hours.


## Choosing Beans and Grind

### Best Beans for Cold Brew

**Medium to dark roasts** are the traditional choice for cold brew. Cold water extraction naturally suppresses acidity, so medium-dark beans' chocolatey, nutty, or earthy flavors come through cleanly.

Brazil, Colombia, Sumatra, and Guatemala-origin coffees work particularly well. Single-origin light roasts can produce interesting results too — just expect more fruit-forward flavor with higher natural acidity.

### Grind Setting

Use a **coarse grind** for cold brew concentrate — think roughly the size of raw sugar granules, coarser than drip but slightly finer than French press.

Too fine means:
- Over-extraction (bitter, harsh)
- Difficult straining (clogs filters)
- Murky, cloudy result

## Serving Variations

### Basic Dilution (1:1 to 1:2)

- **Concentrate : Water = 1:1** — Strong black cold brew, short drink
- **Concentrate : Water = 1:2** — Standard-strength black cold brew
- **Concentrate : Milk = 1:2** — Creamy cold brew latte

### Recipe Variations

**Cold Brew Latte**
50ml concentrate + 100ml whole milk + ice → Clean, creamy iced latte

**Cold Brew Soda**
50ml concentrate + 100ml sparkling water + ice → Bright, fizzy coffee soda

**Vanilla Sweet Cream Cold Brew**
50ml concentrate + 80ml milk + 20ml heavy cream + vanilla syrup + ice → Café-style indulgent drink

**Cold Brew Tonic**
50ml concentrate + 100ml tonic water + ice → Bitter-sweet grown-up iced coffee

## Storage

- **Container**: Glass jar or bottle with a tight lid
- **Temperature**: Refrigerator (below 5°C / 41°F)
- **Shelf life**: Up to 2 weeks; best within the first week
- **Flavor over time**: Oxidation gradually changes flavor. Expect subtle acidity changes after day 7

### Signs It's Past Its Best

- Noticeably more sour than when fresh
- Increased cloudiness or sediment
- Off or musty aroma

Discard at any of these signs.


> ℹ️ **INFO**
>
> **Cold Brew Ice Cubes**
> Pour concentrate into an ice cube tray and freeze. Drop a few cubes into milk or water for an iced coffee that stays full-strength as it melts — never gets diluted. Also excellent as a topping for vanilla ice cream.


## Troubleshooting

**Too bitter**: Reduce steep time, or reduce coffee dose slightly

**Too weak or watery**: Steep longer, or increase coffee dose

**Cloudy and won't clear**: Filter twice through paper; lay a paper towel over a fine mesh strainer as a final pass

**Gritty texture**: Grind is too fine — use a coarser setting

## Summary

Cold brew concentrate is one of the most efficient ways to have great coffee every day with minimal daily effort.

- **Use 100g of coarse-ground coffee to 500–600ml of water**
- **Steep 12–18 hours in the refrigerator**
- **Store up to 2 weeks and dilute to taste each morning**

Batch it on Sunday, and your weekday coffee routine becomes effortless.

## Related Articles

- [Complete AeroPress Guide: Inverted Method Recipes and Expert Tips](https://coffee-guide.jp/brewing/aeropress-extraction-complete-guide-recipe)
- [Cold Brew Coffee Strength Guide: Beginner-Friendly Tips for the Perfect Brew](https://coffee-guide.jp/brewing/cold-brew-coffee-strength-complete-guide-beginner)
- [How to Make Cold Brew Coffee at Home | A Complete Step-by-Step Guide](https://coffee-guide.jp/brewing/cold-brew-coffee)
- [Nitro Cold Brew Coffee: What It Is and How to Make It](https://coffee-guide.jp/brewing/nitro-cold-brew-coffee-guide)
- [Iced Coffee vs Cold Brew: Taste, Method, and Caffeine Differences](https://coffee-guide.jp/brewing/iced-coffee-vs-cold-brew-difference)


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