drink · Drink
How to Make Iced Coffee at Home
The key to proper iced coffee is brewing it strong and hot, then cooling it quickly. Use a 1:15 coffee-to-water ratio, brew with water just off the boil, then pour over ice immediately. Cold brew takes longer but gives you a smoother, less acidic result if you plan ahead.
- Total time: 10 min
- Hands-on: 10 min
- Serves: 1
- Difficulty: Easy
Ingredients
- 30 grams coffee
- 450 ml water
- ice cubes ice
Step by step
- Grind your coffee coarse. Use a burr grinder if you have one. You want pieces roughly the size of coarse sea salt. Fine grinds will over-extract and turn bitter when they hit the ice.
- Measure your ratios. For every 30 grams of coffee, use 450ml of water. This is stronger than regular coffee because the ice will dilute it. If you don't have a scale, that's about 4 tablespoons of coffee to 2 cups of water.
- Heat water to just off the boil. Bring water to a rolling boil, then let it sit for 30 seconds. You want it around 200°F. Too hot and you'll scorch the coffee. Too cool and you won't extract properly.
- Brew using your preferred method. Pour over, French press, or drip all work. Pour over gives you the most control. Let it brew for 4-6 minutes depending on your method. The coffee should taste strong but not bitter.
- Fill a glass with ice. Use a tall glass and pack it with ice cubes. The more ice, the faster it cools and the less diluted it gets initially. Crushed ice melts too fast.
- Pour hot coffee over ice immediately. Don't let the coffee sit and cool slowly. Pour it directly over the ice while it's still hot. You'll hear it crack and hiss. This shock-cooling locks in the flavor.
Tips & troubleshooting
- Make coffee ice cubes from leftover coffee so your drink doesn't get watered down as the ice melts
- Dark roasts hold up better to ice than light roasts, which can taste thin and sour when diluted
- If your iced coffee tastes weak, don't add more coffee grounds next time—use less water instead
- Store cold brew concentrate in the fridge for up to two weeks and dilute as needed
- Add milk or cream after the coffee hits the ice, not before, so it doesn't curdle from the temperature shock
Variations
- Cold Brew Method. Combine coarse ground coffee with cold water in a 1:8 ratio. Steep for 12-24 hours in the fridge, then strain. Serve over ice and dilute with water or milk to taste.
- Japanese Iced Coffee. Place ice directly in your brewing vessel and brew hot coffee onto it. Use half the normal water amount and replace the other half with ice weight. This preserves more of the coffee's bright, acidic notes.
- Flash-Chilled Espresso. Pull a double shot of espresso directly over a glass full of ice. Add a splash of cold water if needed. This gives you the most concentrated flavor.
Questions
- Why does my iced coffee taste watery?
- You're either not brewing it strong enough initially or using too much ice relative to coffee. Brew at a 1:15 ratio instead of the usual 1:17, and make sure your ice isn't melting too fast.
- Can I just put hot coffee in the refrigerator?
- You can, but it takes forever to cool and often develops off flavors. The rapid cooling from ice preserves the coffee's intended taste much better.
- How long does cold brew need to steep?
- Minimum 12 hours for decent extraction, but 18-24 hours gives you the smoothest result. Beyond 24 hours, you start getting bitter compounds you don't want.
- Should I use different coffee beans for iced coffee?
- Medium to dark roasts generally work better because they're less acidic when chilled. Single-origin light roasts can taste sharp and thin over ice, though some people prefer that brightness.