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When you’re craving a quick and easy iced coffee, you can get away with brewing your favorite roast, pouring the java over ice, stirring in your choice of milk or sweetener and calling it a day.
The no-frills method gets the job done, sure. But if you want to get the most out of your caffeinated beverage, you’ll need to put a bit more forethought and effort into your technique. Here, professional baristas share the mistakes you’re making when creating iced coffee at home — and what you should do instead for a balanced brew.
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1. You’re Using Too Much Water
With any iced coffee, the ice in your beverage will inevitably melt, leading to a diluted drink that may taste too weak, too watery, too warm or a combination of all three, said Kathleen McCarthy, a corporate trainer at Lavazza. The good news: You can reduce the odds of this unpleasant drinking experience by accounting for ice melt during the brewing process, she said.
To do so, brew your coffee with a stronger grounds-to-water ratio. The typical recommendation is 1 gram of coffee to 16 grams of water, but when you’re planning to drink your coffee iced, use a slightly stronger ratio of 1:12 or a double-strength 1:8, McCarthy suggested. That way, your beverage will still taste strong even when the added ice begins to melt.
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Make sure you’re not using too little water while brewing, either, which could lead to a sour cup.
2. You’re Pouring Hot Coffee Over Ice
Compounding the dilution problem is the common practice of pouring a freshly brewed cup of joe directly over ice — without allowing it to cool first. “If your hot brew is poured directly over ice, that simply adds more water to your ratio when the ice melts,” leading to a weaker drink, McCarthy explained.
Instead, chill your coffee in the fridge before you pour it over ice. Just know that your final beverage could still be diluted if you aren’t adjusting the strength of your grounds-to-water ratio, too. “The ice will eventually melt and, depending [on] how quickly you drink, the last half or so of your cup could be watered down,” McCarthy said.
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RyanJLane via Getty Images
If you simply can’t wait for your coffee to cool, swap your traditional ice cubes with coffee-based ones; fill an ice cube tray with coffee and freeze. When used, your beverage will stay cold without the risk of it becoming watered down, McCarthy said.
The one exception to this rule: You’re making a flash brew, a favorite iced coffee method for two of the baristas we interviewed. You’ll brew your coffee — the pour-over and AeroPress techniques are most commonly recommended, but a drip machine works just fine — with less hot water than usual. You might brew with just two-thirds of the water you typically use. Then, replace the remaining one-third of water with ice, McCarthy explained. You can brew directly into your glass filled with ice or add the ice to your coffee later.
“This is my preferred method because it doesn’t require any advanced prep and thought like cold brew does, and unlike a standard brewed hot coffee poured over ice, it won’t be diluted or weak,” McCarthy said.
The final beverage won’t be incredibly cold, but the flash brew method is ideal for satisfying that iced coffee craving quickly, said Laila Ghambari, the 2014 United States Barista Champion. Plus, compared to other iced coffee techniques, “it locks in the aromatics and results in a much more flavorful coffee,” she said.
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If your standard brew ratio for hot coffee is 1 gram coffee to 16 grams water, adjust it to: 1 gram coffee to 12 grams water to 4 grams ice. You might brew 20 grams of coffee with 240 grams of hot water and serve it over 80 grams of ice, for example, McCarthy suggested.
3. You’re Storing Your Brewed Coffee Wrong
Don’t just pop a glass filled with java into your fridge and wait an hour or two for it to chill. Coffee stored in an open container will inevitably take on some funky flavors, Ghambari said. “Even if you have fish sitting in your refrigerator, it will permeate and get into your coffee,” she added.
Instead, pour your brew into a sealed vessel — and avoid leaving it on the kitchen counter, where it’s likely to mold more quickly than the cool fridge, Ghambari explained.
4. You’re Leaving The Coffee In The Fridge Too Long Before Using It
Even if your brewed coffee is stored properly, you’ll want to use it soon after it cools. “The longer your brewed coffee sits before you drink it, the more it will acquire stale flavors,” McCarthy said. “The longer your cup of coffee sits, the more the natural oils present in your brewed coffee will develop unpleasant and potentially even rancid flavors.”
Not to mention, aromatics contribute heavily to your drinking experience, Ghambari added. “Fresh-brewed coffee is going to have the most intense aromatics, and so the fresher is probably going to result in the better taste,” she noted.
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Can’t be bothered to brew a fresh batch every day? Try prepping cold brew instead. The coffee is brewed at a cool temperature, so it doesn’t oxidize as quickly, develops fewer acidic flavors, and can be stored for one to two weeks without a significant change in taste, McCarthy said.
5. You’re Using the Wrong Brew Method For Your Flavor Preferences
Each brewing method brings out a different flavor profile in your coffee. The pour-over technique tends to result in clearer, lighter coffee that’s typically best for lighter roasts and more acidic, fruity flavors, McCarthy said.
Use this method if you’re searching for a refreshing flavor profile or you’re in the mood for a fruitier drink, McCarthy recommended. It may particularly appeal to folks who enjoy their iced coffee black, she noted. Make sure to wet the filter before adding your grounds (then dump that water out of your vessel) to remove any stray dust or paper particles and unpleasant paper taste, added Yoshawn Smith, the 2023 Barista League Champion and a barista with Califia Farms and Patria Coffee Roasters.
The French press, however, generally produces coffee with a full, heavy body, so it syncs best with darker roasts and chocolatey, intense flavors, McCarthy said. This brewing technique will give you a strong coffee base that can be softened with milk and ice, she said.
The Bottom Line
The general advice for delicious coffee-making still applies to the iced beverage: Make sure your coffee is used according to the roast date for the best result, brew with filtered water, and stay focused so you don’t forget pulses for your pour-over or miss the time to plunge your French press or AeroPress, Smith said.
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As you fiddle with your brewing practice, McCarthy suggested making just one change at a time; that way you can tell what’s actually improving your cup. Treat it like a science project and even take notes if you feel inclined to. Your perfect cup should be something you can enjoy and replicate on a daily basis, she added.
Remember, making iced coffee shouldn’t be a stressful experience. “Experiment a little bit and find that perfect method for you,” Smith said. “Taste and smell are subjective, and with that being said, enjoy your iced coffee any way you like to. It’s yours, no one can tell you how to enjoy it but yourself.”
Want to make a batch of iced coffee? These are our favorite tools.
HuffPost and its publishing partners may receive a commission from some purchases made via links on this page. Every item is independently curated by the HuffPost Shopping team. Prices and availability are subject to change.
1
Amazon
An ultra-simple mason jar brewer
If you've ever made cold brew at home without a machine, you know that the straining process can get a bit messy — but this simple system solves that problem. Just add your favorite grounds to the included basket, steep your brew in the fridge, and remove the basket when it's done. You can store the concentrate in the one-quart jar or drink directly from it on the go. The included lid comes with a convenient pouring spot. If you're looking for something extremely low-fi, this kit is right up your alley.
2
Amazon
A stainless steel cold brew maker with thousands of five-star reviews
Technically a cold brew maker (there is a difference between cold brew and iced coffee), this coffee maker will deliver a cup of coffee that's 70% less acidic than traditional coffee or iced coffee.
Ovalware's stainless steel, dishwasher-safe cold brew features an airtight seal you can store ready-to-drink cold brew in your fridge for up to two weeks. Not into coffee? You can also easily brew hot or iced tea in this carafe.
3
Amazon
A Mr. Coffee single-serve iced coffee maker
This Mr. Coffee single-serve iced coffee maker comes with a tumbler, making it an easy go-to for busy mornings.
Thanks to Mr. Coffee's simple measuring system, you'll be able to brew the perfect tumbler of iced coffee in under four minutes. It brews a perfect calibrated amount of hot coffee, which can then be dispensed over a full tumbler of ice for a refreshing cold, caffeinated beverage.
Reviewers are obsessed with the simplicity of this machine. "The insulated cup with the fill line and the measuring scoop makes a perfect cup of iced coffee-way better tasting and much colder than brewing a cup of coffee and pouring it over ice," a reviewer wrote. "It was worth the small cost of having a separate machine. I keep it in my home office. Cheap, but quite useful."
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4
Amazon
A high-tech electric cold brew maker
If you're not familiar with the process of making cold brew, it's generally a lengthy one. Unlike iced coffee, cold brew never starts out hot — so it typically has to sit for 12 to 24 hours before it's ready to drink.
This electric cold brew simplifies that process by giving you the ability to have ready-to-drink cold brew in minutes. You can choose from four different brew strengths, all of which will take different amounts of time to prepare.
This cold brew is made to last, too: You can store it in the fridge for up to 10 days. It also includes a self-cleaning function that flushes out residual coffee and cleans it with fresh water.
"I have bought several cold brew makers and have found this one to be one of the best," a reviewer wrote. "It’s so good, I bought an extra one for work."
5
Amazon
A Keurig iced coffee maker
If you're a Keurig fan, we have big news: It's not just for brewing hot coffee anymore. When brewing iced coffee, the Keruig K-Iced automatically adjusts the temperature, starting hot so it can deliver the best possible coffee flavor and then cooling off so it doesn't melt the ice.
The Keurig K-Iced comes with three cup-size settings (8, 10, and 12-ounce) and is compatible with the K-cup universal coffee filter. A removable drip tray can be used to accommodate tumblers and travel mugs up to 11 inches tall, and hold a full "accidental brew" for easy cleanup. Randomly feeling a hot cup of coffee? Worry not, because this coffee maker can do that, too. And if you want iced coffee the next day, just press the "iced coffee" button.
"I have had a larger Keurig 2.0 for years (it still worked just fine), but I wanted an updated look for my coffee station and I had used this model while on vacation and really liked it," one reviewer wrote. "I like the slim water reservoir, it's easy to pop out and fill...it's a really nice looking product on my counter and takes up half the space my old 2.0 took up. I'm glad I upgraded to this model."
