How to Make Dunkin Donuts Iced Coffee Your Way

Joshua Allerton
February 21, 2024

I'm a huge fan of Dunkin' Donuts iced coffee—it's the perfect pick-me-up on a hot day or when I need a quick caffeine fix. And let's be honest, who doesn't love the convenience of grabbing a cool, refreshing drink on the go? But I've discovered making it at home is not only easy but also saves me a trip and a bit of cash.

Today, I'll show you how to whip up your very own Dunkin' Donuts iced coffee right in the comfort of your kitchen. It's simpler than you might think, and the best part? You can customise it exactly to your taste. Let's dive in and turn your kitchen into the next best thing to a Dunkin' drive-thru.

Choosing the Right Coffee Beans

When it comes to replicating that signature Dunkin' Donuts iced coffee experience at home, the choice of beans is critical. I've experimented with a variety, and I'm here to share what works best.

Dunkin' Donuts uses a medium roast blend, known for its smooth, rich flavour that's both bold and easy on the palate. For those looking to get as close as possible to the authentic taste, opting for a medium roast is a must. It strikes the perfect balance, ensuring your iced coffee isn’t overshadowed by overly bitter or acidic tones often found in darker roasts.

However, there's room for personal preference. If you prefer a lighter, more acidic coffee, a light roast could introduce interesting flavours. Conversely, for those who enjoy a robust, intense flavour, a dark roast might be your pick. Here's a quick guide:

  • Medium Roast: Balanced flavour, smooth, the closest to Dunkin's original blend.
  • Light Roast: Higher acidity, nuanced flavours, slightly fruitier tones.
  • Dark Roast: Bold, strong, with a pronounced bitterness.

It's not just about the roast; the quality of the beans matters immensely. I always recommend going for whole beans over pre-ground coffee. They retain freshness longer, allowing for a more flavourful cup when you grind them just before brewing. Here's a simple step-by-step on selecting beans:

  1. Decide on the roast level according to your taste preference.
  2. Look for whole beans for optimal freshness.
  3. Check the roast date to ensure you're getting a recent batch.

By following these guidelines, you're setting yourself up for success, ensuring your homemade Dunkin' Donuts iced coffee isn’t just a mere imitation but a personalised version that could rival the original. Next, let's talk about the optimal brewing techniques to bring out the best in your chosen beans.

Brewing the Perfect Coffee

After selecting the ideal beans for your Dunkin' Donuts inspired iced coffee, it's time to brew it to perfection. I've discovered that nailing the brewing process is just as crucial as the bean selection. Here's a straightforward method that I follow, ensuring a deliciously smooth and icy coffee every time.

First, let's talk about the coffee-to-water ratio, a pivotal factor in achieving the desired strength and flavour. A golden ratio I've found works wonders is 1:15; that's one part coffee to fifteen parts water. This ratio strikes a perfect balance, especially for iced coffee, where you don't want the flavour to be too intense nor too diluted.

Here's a Quick and Easy Brewing Guide:

  1. Grind Your Beans: Aim for a medium to coarse grind. This size is ideal for a balanced extraction, preventing your coffee from tasting too bitter or too weak.
  2. Measure and Mix: Considering the 1:15 coffee-to-water ratio, measure your grounds and water accordingly. For every 1 gram of coffee, use 15 millilitres of water.
  3. Brew Time: If you're using a drip coffee maker or a pour-over method, the brewing time should be about 4-5 minutes. It’s the sweet spot for extraction.
  4. Cool Down: Let your brewed coffee reach room temperature first, or chill it in the refrigerator for about 30 minutes. This step prevents your ice from melting too quickly when you serve.
  • Fill your glass to the top with ice.
  • Pour the cooled coffee over the ice.
  • Add milk or sweetener, if preferred.

Brewing coffee for iced beverages is an art in itself. By following these simple steps, I ensure my Dunkin' Donuts inspired iced coffee is always refreshing and flavourful. The key is in the preparation and the patience to let your coffee cool down properly. This method has never let me down and it allows the bold and smooth flavours of the beans to shine through in every sip.

Chilling Method for the Iced Coffee

After mastering the brewing process, the next step in crafting that quintessential Dunkin' Donuts iced coffee experience at home revolves around the chilling method. Now, I've found through extensive trial and error, that quick cooling prevents the coffee from becoming over-diluted or losing its rich flavour. So, here's a hassle-free guide to chilling your coffee the right way.

Rapid Cool Down

  1. Pour freshly brewed coffee into a heat-resistant pitcher. Make sure it can handle the transition from hot to cold without cracking.
  2. Stir in sugar or sweetener while the coffee is still warm if you like your iced coffee sweet. This ensures that the sweetener fully dissolves.
  3. Place the pitcher in an ice bath. Fill your kitchen sink or a large bowl with ice and a bit of water, then set the pitcher in the centre. The ice bath will cool the coffee quickly and efficiently without diluting its flavour.
  4. Stir occasionally to cool the coffee evenly.
  • After about 15-20 minutes in the ice bath, your coffee should be significantly cooler and ready for the next stage.
  • Transfer the coffee into a cold brew pitcher or a large bottle and place it in the fridge. Let it chill for at least an hour, but ideally overnight. This slow cooling phase helps develop the flavours, making your iced coffee smoother and more refreshing.

The goal here is to achieve that perfect chill that makes iced coffee so invigorating without watering it down. Remember, bold and smooth flavours are the hallmark of an excellent iced coffee, and how you cool your brew plays a pivotal role in hitting those notes.

Sweetening and Flavouring Options

After achieving the perfect chill, it's time to add those personal touches that turn a good iced coffee into your perfect summer drink. Dunkin' Donuts has always offered a variety of flavour options, which means you've got plenty to play with when making your drink at home. Here's a breakdown of the best ways to sweeten and flavour your iced coffee, emulating that sought-after Dunkin’ experience.


  • Sugar: The classic choice. If you're adding while your coffee is still a bit warm, it’ll dissolve better.
  • Simple Syrup: Ideal for cold beverages as it integrates seamlessly. You can make it at home by dissolving sugar in equal parts hot water.
  • Honey or Maple Syrup: These add a unique flavour besides just sweetness. They're perfect when you're looking for something a bit different.

Flavour Shots and Swirls:

Adding a flavour shot or swirl into your iced coffee can transform it from your morning caffeine fix into a delightful treat. Here's how:

  1. Choose Your Flavour: Vanilla, Hazelnut, and Caramel are classic picks. But don't be afraid to experiment with more unique options like Blueberry or Coconut.
  2. Flavour Shots: These are unsweetened and sugar-free, perfect for adding a punch of flavour without altering the sweetness.
  3. Flavour Swirls: If you're looking for sweetness plus flavour, swirls are your go-to. They're creamy and more indulgent.

Dairy and Non-Dairy Add-ins:

  • Whole Milk: For richness.
  • Skim Milk: A lighter option.
  • Oat or Almond Milk: Great for a dairy-free alternative. They also add a subtle flavour twist that complements the coffee beautifully.

Remember, the beauty of making Dunkin’ Donuts iced coffee at home is the ability to tailor it to your exact preferences. Whether it’s the level of sweetness or the intensity of flavours, you're in control. Start with the basics and then tweak from there until you find your perfect concoction.

Customising Your Dunkin' Donuts Iced Coffee

I've discovered one of the best parts of making Dunkin' Donuts iced coffee at home is the immense freedom to customise it exactly to my taste. Whether I'm in the mood for something sweet, creamy, or with a bit of a kick, the options are endless. Here, I'll guide you through some of my go-to customisations that you can try too.

Choosing the Right Coffee Strength

First off, the coffee itself. If you prefer a stronger coffee flavour, opting for a double-strength brewed coffee as your base is essential. This involves:

  1. Using twice the amount of coffee grounds you'd normally use for a standard brew.
  2. Letting it cool to room temperature before pouring it over ice.

For those who enjoy a lighter taste, sticking to the regular brewing ratio works perfectly. The key is to always allow the coffee to cool down; otherwise, it'll melt the ice too quickly and dilute the flavour.

Sweeteners and Flavour Enhancements

Next up, sweetening and adding flavours. While Dunkin’ offers a plethora of syrup and swirl options, at home, I love being able to control exactly how sweet or flavoured my iced coffee is. My favourites include:

  • Sugar or simple syrup for classic sweetness.
  • Honey or maple syrup for a natural twist.
  • Vanilla, hazelnut, or caramel for a flavourful punch.

Milk and Milk Alternatives

The choice of milk significantly affects the texture and taste. Here are the options I frequently rotate between:

  • Whole milk for a creamy texture.
  • Skim milk for a lighter version.
  • Oat milk or almond milk for a dairy-free alternative.

By experimenting with these elements, I've perfected my morning Dunkin' Donuts inspired iced coffee. It's all about finding the right balance that suits my palate. And what's great is that there's always room to try something new; maybe adding a pinch of cinnamon for a spicy twist or mixing different syrups to create my unique blend.


Crafting the perfect Dunkin' Donuts inspired iced coffee at home isn't just about following a recipe—it's about making it uniquely yours. I've shared how you can adjust the coffee's strength to your liking and play with a variety of sweeteners and flavours. Remember, the key is to experiment. Whether it's trying out different milk alternatives or spicing things up with cinnamon, there's no right or wrong way to do it. So go ahead, mix and match, and find that perfect combination that brightens your mornings. Trust me, once you've tailored it to your taste, you'll never settle for less.

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