What Is Cold Brew Coffee? Everything Beginners Need to Know

What Is Cold Brew? The Simple Definition

So what is cold brew coffee, exactly? It is coffee made by soaking coarse coffee grounds in cold or room-temperature water for 12-24 hours. No hot water is used at any point. The long soaking time does the same job that heat does in regular coffee — it pulls the flavour out of the grounds and into the water. The result is a smooth, naturally sweet coffee with very little bitterness.

That is it. No special machine, no complicated process. Just coffee, cold water, and time.

The concept is centuries old. Dutch traders are believed to have started cold-brewing coffee in the 1600s because it was easier to transport cold concentrate on ships than to brew hot coffee on a rocking boat. Japan adopted and refined the method, and today Japanese-style cold brew (called Kyoto-style) is considered the gold standard of slow-drip cold brewing.

Cold Brew Is NOT Iced Coffee

This is the biggest confusion for beginners. Cold brew and iced coffee are completely different drinks, even though they are both served cold.

In India, what most people call "cold coffee" — the blended drink with milk, sugar, and ice cream — is neither cold brew nor iced coffee. That is a milkshake with coffee flavour. Cold brew is a different category entirely — it starts with the brewing method, not the serving temperature.

Why Does Cold Brew Taste Different?

Cold brew tastes smoother and less bitter than regular coffee because cold water extracts flavour compounds differently than hot water. Think of it like making sun tea versus boiling tea — different temperatures pull out different things.

Here is the simple science:

• Hot water extracts fast — it pulls out the good stuff (flavour, sweetness) and the bad stuff (bitter, harsh compounds) in just a few minutes
• Cold water extracts slowly — it pulls out the good stuff over 12-24 hours, but many of the harsh, bitter compounds never fully dissolve at low temperatures

The result is coffee that tastes naturally sweet, smooth, and mellow — with chocolate and caramel notes instead of the sharp, acidic punch of hot coffee. Many people who think they "do not like black coffee" end up liking cold brew because it is a fundamentally smoother drink.

Cold Brew in India: Where It Fits

India has a rich coffee culture — from South Indian filter coffee in Karnataka and Kerala to instant Nescafe across the country. Cold brew is a newer addition, but it is growing fast.

Market growth: The Asia-Pacific cold brew market is growing at nearly 19% per year, with India being one of the fastest-growing markets globally. Brands like Sleepy Owl (which reached Rs 100 crore in revenue) and Blue Tokai have made cold brew mainstream in Indian metros. — Mordor Intelligence, 2025

Cold brew fits into Indian coffee culture as a summer alternative. From March to September — roughly half the year — most of India is too hot for a steaming cup of filter coffee at 3 PM. Cold brew fills that gap perfectly. You get your caffeine, you get good coffee flavour, and you do not sweat through your shirt drinking it.

It also works alongside traditional Indian coffee, not as a replacement. I still drink ghar ka filter coffee in winter mornings. But from April onwards, the cold brew pitcher lives permanently in my fridge.

Who Should Try Cold Brew?

Cold brew is not for everyone — and that is fine. Here is who tends to love it and who might not.

You will probably love cold brew if:

• You think regular coffee is too bitter or acidic-tasting
• You enjoy cold drinks, especially in summer
• You like your coffee smooth and naturally sweet
• You want a "set it and forget it" coffee routine — make once, drink for days
• You are curious about coffee beyond instant Nescafe

You might not love cold brew if:

• You prefer the bold, sharp kick of hot black coffee
• You like the ritual of freshly brewing each cup
• You are not willing to wait 16+ hours for coffee (understandable)
• You prefer the specific flavour profile of South Indian filter coffee (cold brew is a different drink)

How to Get Started

Starting with cold brew is simple. You need three things:

1. Get coarse-ground coffee — any medium to dark roast Indian coffee works. Ask your local shop to grind it for "French press" or "cold brew."
2. Pick a container — a mason jar works for your first batch. If you like cold brew, a dedicated cold brew maker with a built-in filter makes the process much easier.
3. Follow the basic method — add coffee and cold water (1:8 ratio for your first batch), put it in the fridge for 16-18 hours, filter, and drink.

For a detailed walkthrough, read our step-by-step cold brew guide.

Saran Reddy

Founder, InstaCuppa | Building kitchen tools that give busy Indian moms their time back