Recipes, guides and kitchen know-how. Mostly useful, occasionally silly.
How to Make Iced Coffee at Home That Isn't Brown Puddle Water
Brew your coffee double strength, pour it straight over big ice cubes so it chills fast, then add milk or cold water. Bigger cubes melt slower, so it stays strong to the last sip.
Yes, it's October.
Yes, it's raining. Sideways, mostly.
And yes, I'm drinking an iced coffee in a bobble hat. Some of us don't need the sun's permission.
The trouble is, most homemade iced coffee is rubbish. You pour a perfectly nice coffee over a few ice cubes, turn round to find a straw, and when you turn back it's a glass of beige pond water.
So here's how to make iced coffee at home that still tastes of coffee when you get to the bottom of the glass. No machine, no syrup bar, no £3.80 cup of mostly ice.
Why your iced coffee tastes like a puddle
It's not you. It's physics. Well, it's a bit you.
Pour normal-strength hot coffee over a handful of small ice cubes and two things happen. The coffee melts the ice, and the melted ice waters down the coffee. You end up with something about half as strong as you wanted, and twice as sad.
The fix comes in two parts:
- Make the coffee stronger, so the melting ice brings it down to normal strength rather than below it.
- Use bigger ice, so it melts slowly and stops diluting your drink every time you look away.
That really is the whole secret of how to make iced coffee properly. Everything else is just showing off. We'll do a bit of that too.
What you'll need
- Coffee. Ground coffee for the best version, instant if you're in a hurry. No snobbery here.
- A press or a kettle. A glass press makes the strongest, smoothest coffee for this. A kettle does for instant.
- Big ice cubes. The bigger the better. More on why in a minute.
- Cold milk, if you like it white. Straight from the fridge.
- A tall glass. A pint glass works. Nobody's watching.
Method 1 - The flash chill (our favourite)
This is the one I make most. It's quick, it's strong, and it tastes like actual coffee rather than coffee's distant cousin.
- Brew it double strength. Use your usual amount of ground coffee but only half the water. So if you'd normally make two mugs, make one mug's worth of very strong coffee instead.
- Steep for four minutes, then plunge slowly. If you've never used one, here's everything else you need to know about the press.
- Fill a tall glass right to the top with big ice cubes. Not a few. Right to the top.
- Pour the hot coffee straight over the ice. It'll crackle and hiss like a bonfire. That's the good bit.
- Give it a stir, top up with a few more cubes if it's sunk, and add milk if you fancy it.
The hot coffee gets all the flavour out of the beans, then the ice chills it in seconds and brings it down to normal strength. The coffee nerds at Perfect Daily Grind call this flash brewing, and reckon on roughly two-thirds of the water going in hot and one-third arriving as ice. Which is a very fancy way of saying "pour hot coffee on ice". We'll take it.
Make coffee ice cubes. Got leftover coffee in the pot? Let it cool, pour it into our big-cube silicone trays and freeze it. Now when your ice melts, it melts into more coffee, not water. The top tray doubles as a lid, so the cubes don't taste of last week's fish fingers either. Genius. Smug, but genius.
Big cubes, big difference
Here's the science bit. Concentrate.
A pile of little ice cubes has loads of surface area touching the warm coffee, so it all melts at once. One big cube has far less surface for its size, so it melts slowly and steadily. Even New Zealand's school science tests make kids work this out. Small ice, warm air, gone. Big ice, still there.
Aaron tested this with a magnifying glass and a stopwatch. For forty minutes. The big cube won. He'd like that on the record.
That's why our trays make proper whopping square cubes, plus giant ice balls if you're feeling fancy. Two of them in a glass will keep an iced coffee cold and strong for ages, where a handful of tiddlers would have given up before you found your sunglasses.
How to make iced coffee with instant coffee
The emergency version. Five minutes, no press, no judgement. Well, a little bit of judgement. But we'll keep it to ourselves.
- Dissolve it in hot water first. Two heaped teaspoons of instant in about two tablespoons of just-boiled water. Instant doesn't dissolve properly in cold water, and nobody wants crunchy coffee.
- Stir in any sugar now, while it's hot. More on that below.
- Fill a glass with ice, pour the coffee over, then top up with about 150ml of cold water or cold milk.
Done. It's not going to win any awards, but it's cold, it's strong, and you made it before the kettle finished clicking off.
How to make an iced latte
An iced latte is just strong coffee, lots of cold milk and plenty of ice. That's it. No steaming, no barista, no little heart on top that looks like a potato.
- Fill a tall glass with ice.
- Pour in about 180ml of cold milk, leaving room at the top.
- Slowly pour about 60ml of double-strength coffee over the top. Watch it swirl down through the milk in big brown clouds. Very Instagram. Very satisfying.
- Stir before you drink it, or the first sip is pure milk and the last one could strip paint.
Want a bit of foam on top? A handheld frother works on cold milk too. Whizz a splash for twenty seconds and spoon it on. If you'd rather a warm one, here's the hot version, froth and all.
And the iced americano?
Eesha's drink of choice. Black, cold, no nonsense. Very teacher.
Pour your double-strength coffee over a glass full of ice, then top up with about the same amount again of cold water. That's it. Stronger than iced coffee with milk, more refreshing than you'd think, and it's the one to go for if you actually want to taste the beans.
Sweetening it (without crunchy sugar)
Here's a trap. Sugar won't dissolve in cold coffee. You stir and stir and it just sits at the bottom of the glass like sand, waiting to ambush your last sip.
- Sweeten it while it's hot. Stir sugar or honey into the coffee before it goes over the ice.
- Make a simple syrup. Heat equal amounts of sugar and water in a pan until it goes clear, let it cool, and keep it in a jar in the fridge for a couple of weeks. It mixes into cold drinks instantly.
- Use maple syrup. It's runny enough to stir straight in, and it tastes like autumn. Which, to be fair, it is.
Make it fancy
- Vanilla. A drop of vanilla extract in the syrup. Tastes like the expensive one.
- Salted caramel. A spoon of caramel sauce and a tiny pinch of salt in the hot coffee. Dangerous.
- Orange. A strip of orange peel twisted over the glass. Sounds weird. Isn't.
- Affogato-ish. Pour your strong coffee over a scoop of vanilla ice cream instead of ice. Technically pudding. Technically still coffee.
If it goes wrong
Watery by the third sip? The coffee wasn't strong enough, or the ice was too small.
Fix: brew it double strength and use big cubes, or coffee ice cubes so the melt doesn't matter.
Bitter and harsh? It sat on the grounds too long, or the water was straight off a roaring boil.
Fix: four minutes, then plunge and pour it all out. Let the kettle settle for thirty seconds first.
Sludgy at the bottom? The coffee's ground too fine for a press.
Fix: use a coarse grind, and leave the last centimetre in the jug. That's where the gritty bits live.
Sugar sitting at the bottom like sand? It went in cold.
Fix: sweeten while hot, or use syrup. And stir the sand into tomorrow's coffee. Waste not.
Ice cubes taste of the freezer? They've been sitting uncovered next to the frozen peas and that curry from March.
Fix: use a tray with a lid, and make fresh ice every week or so.
Strong coffee, big ice, and a stubborn refusal to wait for summer. That's all it takes.
Now go and cook something. Or at least pour something. Bobble hat optional.
