What is the difference between cold brew and iced coffee?
Cold brew is extracted with cold water over 12–24 hours — gentle, low acidity, sweet. Iced coffee is hot-brewed coffee chilled over ice — more intense, higher acidity. Both are cold, the difference lies in the brewing process.
Why that is
The water temperature during extraction fundamentally changes which compounds are dissolved from the coffee. Hot water extracts quickly and aggressively — including acids and bitter compounds. Cold water extracts more slowly and selectively — it primarily dissolves sugars, chocolate, and caramel notes, while many acids and bitter compounds remain in the coffee grounds.
Cold Brew:
- Cold water, 12–24 hour steep time.
- Result: Gentle, sweet, low acidity, full-bodied.
- Is brewed as a concentrate and diluted before drinking.
- Flavor: Chocolate, caramel, nut, little fruit.
- Keeps well in the fridge (7–14 days).
Iced Coffee:
- Hot-brewed (pour-over, espresso, or filter coffee), then quickly cooled down over ice.
- Result: Intense, fruity, acidic — basically regular coffee, just cold.
- Tastes more vibrant and complex than cold brew, but also has more acidity.
- Consumed immediately, not stored.
- Flavor: Fruit, florals, acidity — similar to the hot coffee.
- Method: "Japanese Iced Coffee" — brewed directly over ice, resulting in instant cooling without being excessively watered down.
When to choose what?
- Cold brew, if you like it gentle, sweet, and uncomplicated. Ideal for hot days or for milk drinks.
- Iced coffee, if you want to experience the full flavor profile of the coffee even when cold — especially with light, fruity single origins.
Both methods are distinct and good — it's not about better or worse, but about preference.
In practice at Green Wall Coffee
We don't have cold brew on the menu at Sophienstraße 27 at the moment. Cold drinks here are espresso-based over ice, such as iced latte, iced americano or espresso tonic. At home the comparison is worth it: cold brew and iced coffee taste surprisingly different.
Stop by Sophienstraße 27 in Berlin-Lichtenberg — Mon–Fri 8am–5pm, Sat 10am–5pm.
Further reading
Related questions:
- How to make cold brew at home?
- What coffee-to-water ratio do I need for cold brew?
- How long does cold brew need to steep?
Also relevant:
- What grind size do I need for cold brew? — Grinding & Grind Size
- How much caffeine is in a cup of coffee? — Health & Caffeine
All questions in this topic: Cold Brew & Iced Coffee