How to Make Iced Coffee at Home

Pouring regular hot coffee over ice is the most common reason homemade iced coffee tastes thin and watered down — as the ice melts, it dilutes coffee that was only ever brewed to taste right at full strength, not at double strength to account for the meltwater. The fix doesn't require a special iced-coffee machine, just brewing stronger on purpose and being a little more deliberate about the ice.

The method below works with any drip coffee maker you already have, including single-serve brewers, and takes about the same five minutes as a regular pot — the only real difference is the grounds-to-water ratio and a short cooldown step.

Brew it stronger than usual

Use roughly 1.5 to 2 times your normal amount of grounds for the same amount of water — if your regular ratio is 2 tablespoons per 6 oz cup, go closer to 3-4 tablespoons for iced coffee. This gives you a concentrate that can handle being poured over a full glass of ice without tasting faint once it's diluted.

Any standard drip coffee maker handles this fine; you're not changing the brew cycle, just feeding it more coffee relative to water. If your machine has a 'bold' or 'strong' brew setting, turn it on for this batch as well.

Cool it down before it hits the ice

Pouring coffee straight from the carafe onto ice melts a lot of that ice immediately, which waters the drink down anyway even with a stronger brew. Let the coffee sit for 5-10 minutes off the heat, or stir in a few ice cubes just to take the edge off, before pouring it into your glass of fresh ice.

If you're not drinking it right away, pouring the hot concentrate into a heatproof pitcher and refrigerating it for later works better than leaving it on a warming plate, which keeps cooking the coffee and turns it bitter within the hour.

The coffee ice cube trick

Freeze leftover brewed coffee in an ice cube tray ahead of time, and use those instead of (or alongside) regular ice. As they melt, they add more coffee flavor instead of diluting the glass, which matters most if you tend to let a drink sit around and melt before finishing it.

This is also the easiest way to use up the last inch of a pot that would otherwise go stale sitting in the carafe — freeze it the same day rather than letting it sit out.

Serving it

Fill a glass with ice (regular or coffee cubes) first, then pour the cooled concentrate over it, leaving room for milk, cream, or a flavored syrup if you want one. Stir once the milk goes in, since cold coffee doesn't mix on its own the way hot coffee does.

If you want a sweeter result without grainy undissolved sugar, stir sugar into the coffee while it's still warm, before it goes over ice — sugar dissolves far more slowly once the drink is cold.

When it's worth upgrading your coffee maker

This method works with nearly any drip machine, but a brewer that runs cooler than it should will make an already-diluted iced coffee taste even flatter, since you're relying on the concentrate to carry the flavor through the ice. If your current machine is on its way out or never brewed strong coffee well even at full strength, our best coffee makers roundup covers which models hold a steady brew temperature and handle a stronger, less-watery brew without extra tinkering.