# Iced Coffee

Source: https://dailyextraction.com/drinks/iced-coffee/
Last updated: 2026-10-21

> Iced coffee is coffee served cold: usually brewed hot, at a higher strength than normal, then chilled and poured over ice, black or with milk and sweetener. Brewing it strong makes up for the melting ice. It's different from cold brew, which is made without heat by steeping grounds in water for many hours.

## At a glance

- Chapter: Iced and blended
- Served: Iced
- Glass: Tall glass of ice
- Also known as: cold coffee, aisu kōhī

## Ingredients

- 30 g ground coffee, for a double-strength brew
- 12 oz (about 350 ml) water, just off the boil
- a tall glass full ice
- 2 tbsp, or to taste milk (optional)
- 1–3 tsp simple syrup or another liquid sweetener (optional)

## Steps

1. **Brew it strong**: Brew coffee at about double your usual strength, for example 30 g of coffee to 12 oz of water in a French press, steeped for 4 minutes.
2. **Chill the coffee**: Let it cool to room temperature or below, in a sealed jar in the fridge or, for speed, the freezer.
3. **Fill a glass with ice**: Fill a tall glass, chilled if you have time, with ice, or with coffee ice cubes for a stronger drink.
4. **Pour and finish**: Pour the coffee over the ice, then add milk and a liquid sweetener to taste.

**Iced coffee** is simply coffee served cold. Most often it's brewed hot, **stronger than usual**, then chilled and poured over **ice**, black or with milk and a sweetener. It's the plainest member of a big family: the Greek frappé, the Vietnamese cà phê sữa đá and the German Eiskaffee are all iced coffees with their own rules. This page is about the everyday version, how to make it well at home, and how it got popular. For the brewing methods built around cold coffee, see the links below.

## The short version

- **Coffee, brewed hot and strong, chilled, over ice.**
- **About double strength**, so the melting ice doesn't water it down.
- **Black, or with milk** and a liquid sweetener.
- **Not cold brew**: cold brew never meets hot water.
- **Popularised in the US** by coffee-trade campaigns from 1919.



## How do you make iced coffee?

Homegrounds' method:

1. **Brew strong coffee**, with any method you like. Homegrounds doubles its usual ratio in a French press: **30 g of coffee to 12 oz of water** at about 200°F (93°C), steeped for **4 minutes**.
2. **Chill it** to room temperature or below. The freezer takes about 30 minutes; the fridge four hours or more. Keep it in an airtight jar so it doesn't pick up fridge smells.
3. **Fill a glass with ice.** Chill the glass while the coffee brews if you can. Coffee ice cubes make it stronger.
4. **Pour the coffee over the ice**, then add milk and sweetener to taste.

**Strength is the whole trick.** Regular coffee ends up watery once the ice melts, Homegrounds says, and Wikipedia agrees that iced coffee is generally brewed stronger than normal. A century ago, Ukers quotes the same advice from Ida C. Bailey Allen's recipe booklet for the coffee trade: coffee to be served cold "should be made somewhat stronger than usual", and chilled before adding sugar and cream.

## How do you sweeten it?

Sugar is stubborn in cold coffee. Homegrounds says granulated sugar doesn't dissolve well in cold liquids, so use **1–3 teaspoons of simple syrup**, honey or another liquid sweetener. Wikipedia suggests the other route: add sugar while the coffee is still hot, when it dissolves faster.

## Iced coffee, cold brew or flash brew?

There are three common ways to get cold coffee into a glass, and they taste different:

| | How it's made | Source |
| --- | --- | --- |
| **Iced coffee** | Brewed hot at extra strength, chilled, poured over ice | Wikipedia; Homegrounds |
| **Brewed onto ice** | A smaller, stronger hot brew dripped straight onto ice, which dilutes it to strength | Wikipedia (Japanese iced coffee); Homegrounds |
| **Cold brew** | Grounds steeped in water without heat for hours, then strained | Wikipedia; Homegrounds |

Each has its own guide: [Japanese iced coffee](https://dailyextraction.com/methods/japanese-iced-coffee/), [cold brew](https://dailyextraction.com/methods/cold-brew/), [snap-chilled coffee](https://dailyextraction.com/methods/snap-chilled/) and the [iced AeroPress](https://dailyextraction.com/methods/iced-aeropress/). Wikipedia notes that Starbucks uses the double-strength hot method, which, unlike cold brew, keeps the acidity of hot-brewed coffee.

## Black or with milk?

Both. Homegrounds adds a couple of tablespoons of whole milk; BBC Good Food blends **200 ml of strong black coffee** with **50 ml of milk**, ice and optional maple syrup until foamy. Add espresso and cold milk and you have an [iced latte](https://dailyextraction.com/drinks/iced-latte/); espresso and cold water make an [iced Americano](https://dailyextraction.com/drinks/iced-americano/).

## Where does iced coffee come from?

Cold coffee is old: Wikipedia points to the **mazagran**, from 1840s French Algeria, and says chilled "iced coffee" appeared on menus and in recipes in the **late 19th century**. Its popularity in the US came from marketing, in waves:

| When | What happened | Source |
| --- | --- | --- |
| From 1919 | The US coffee trade's national campaign, run by the Joint Coffee Trade Publicity Committee, included a warm-weather "publicity drive for iced coffee" | Ukers, *All About Coffee* (1922) |
| Early 1920s | A brief spike in popularity, but iced coffee didn't become a typical American drink | Library of Congress |
| 1939 to 1956 | The Pan-American Coffee Bureau ran campaigns for iced coffee, ending with "Cool Off With Coffee" in 1956; the trade press said it still didn't take off | Library of Congress |
| 1990s | Chains such as Starbucks and Dunkin' Donuts began selling icy coffee drinks, and iced coffee surged | Library of Congress |

Wikipedia dates the committee's campaign to 1920. Elsewhere, iced coffee grew up on its own: in **Japan**, Wikipedia says, it has been drunk in coffeehouses since the **Taishō period**, around the 1920s, with gum syrup and milk.

## Iced coffee around the world

- **[Greek frappé](https://dailyextraction.com/drinks/greek-frappe/):** instant coffee shaken into a foam over ice.
- **[Mazagran](https://dailyextraction.com/drinks/mazagran/):** cold coffee with lemon, from Algeria via Portugal.
- **[Eiskaffee](https://dailyextraction.com/drinks/eiskaffee/):** Germany's cold coffee over vanilla ice cream.
- **[Oliang](https://dailyextraction.com/drinks/oliang/):** Thailand's sweet black iced coffee.
- **[Vietnamese iced coffee](https://dailyextraction.com/methods/vietnamese-iced-coffee/):** phin coffee with condensed milk, over ice.

Explore every drink in the [iced and blended chapter](https://dailyextraction.com/drinks/iced-coffees/).

## Words used in this guide

- [Total dissolved solids (TDS)](https://dailyextraction.com/glossary/tds/): Total dissolved solids (TDS) measures how much coffee is dissolved in the cup, shown as a percentage.
- [Steeping](https://dailyextraction.com/glossary/steeping/): Steeping is leaving ground coffee to sit in water so its flavour dissolves out, as in a French press or cold brew.
- [Acidity](https://dailyextraction.com/glossary/acidity/): Acidity in coffee is the bright, lively, juicy quality you taste on the tongue, like the tang of fruit.

## FAQs

### Why is iced coffee brewed stronger?

Because the ice melts into it. Wikipedia says iced coffee is generally brewed stronger than normal to make up for the dilution, and Homegrounds says regular-strength coffee ends up tasting watery.

### What is the difference between iced coffee and cold brew?

Heat. Iced coffee is brewed hot and then chilled; cold brew is made without heat, by steeping grounds in water for hours, Wikipedia and Homegrounds explain. Homegrounds adds that the two taste very different, even from the same beans.

### Can you pour hot coffee straight over ice?

Yes, if you brew less of it and make it stronger. Homegrounds calls this Japanese-style iced coffee or flash brew; Wikipedia describes Japanese iced coffee dripping onto ice cubes, with less hot water to allow for the melting ice.

### How should you sweeten iced coffee?

With a liquid sweetener, or before it's chilled. Homegrounds says granulated sugar doesn't dissolve well in cold liquids and suggests simple syrup or honey. Wikipedia notes that sugar dissolves faster if added while the coffee is hot.

### When did iced coffee become popular?

In waves. William Ukers says the US coffee trade's national advertising campaign, run by the Joint Coffee Trade Publicity Committee from 1919, included a summer "publicity drive for iced coffee". The Library of Congress says it stayed unusual after a brief early-1920s spike, and only took off in the 1990s.

## Sources

- [Iced coffee](https://en.wikipedia.org/wiki/Iced_coffee)
- ["Cool Off With Coffee": promoting iced coffee in mid-century America](https://blogs.loc.gov/inside_adams/2023/06/cool-off-with-coffee/)
- [All About Coffee (1922)](https://www.gutenberg.org/ebooks/28500)
- [How to make iced coffee](https://www.homegrounds.co/how-to-make-iced-coffee/)
- [Iced coffee recipe](https://www.bbcgoodfood.com/recipes/iced-coffee)