Introduction:Cold brew coffee and iced latte are two of the most beloved coffee types in summer. One highlights the layers and freshness of black coffee through long-term low-temperature steeping, while the other combines fresh milk with espresso to deliver a rich yet refreshing flavor. This article will detail the historical background, extraction principles, recipe ratios, and practical brewing techniques of both, along with key parameters and helpful tips, helping you brew a professional-grade coffee experience at home.
On hot summer days, what many people crave most is a coffee that’s refreshing yet flavorful — cold brew and iced latte. Cold brew is a type of black coffee made through extended cold extraction, showcasing a unique clean acidity and smooth mouthfeel; whereas iced latte blends espresso with fresh milk, chilled with ice, resulting in a smooth and satisfying cold beverage. This article will delve into the origins, brewing methods, key parameters, and adjustment tips of these two popular summer coffees, so you can master everything from bean selection to brewing.
The Origins of Cold Brew Coffee: Wisdom from Dutch Sailors
When it comes to the origin of cold brew coffee, its history dates back to 17th-century Holland. At the time, the Netherlands had a powerful naval presence, with colonies and trade routes spanning the globe. To allow sailors to enjoy coffee during long voyages, someone invented a brewing method that involved steeping coffee grounds in cold water for over 20 hours. This method required no heat, effectively reducing bitterness while extending shelf life, and also released a relatively high amount of caffeine, making it an ideal pick-me-up for sailors.
As the Dutch East India Company expanded, this cold brewing method spread to Japan, where it merged with local cold tea culture and further evolved into refined slow-drip techniques such as Kyoto-drip, which remains a favorite among coffee enthusiasts to this day.
How to Make Cold Brew Coffee? Master the Recipe and Steps
Cold brew coffee is an immersion-style extraction, and it is generally recommended to usea coffee-to-water ratio of 1:13. For example, take 30 grams of coffee beans, paired with about 240 milliliters of water and 150 grams of ice. The grind size of the coffee beans is advised to bemedium-fine, approximately 80–85% passing through a standard 0.85mm sieve. Too fine may lead to over-extraction, bringing out off-flavors or woody notes, while too coarse may result in under-extraction, yielding a weak flavor.
Place the ground coffee into a clean, oil-free, airtight container, add ice and cold water, gently shake to mix, then let it sit in the refrigerator for about12 to 24 hours. The longer the steeping time, the more intense the flavor, but care should be taken to avoid over-extraction. After extraction, filter out the coffee grounds using paper filters or a fine mesh strainer, and your cold brew is ready to enjoy.
It is worth noting that cold brew does not easily extract robust body compounds, so it is recommended to choosemedium-light to medium roastedcoffee beans with bright, sweet, or fruity profiles, which can better showcase the delicate nuances of cold brew.
For example, Ethiopian sun-dried Red Cherry coffee beans often present a juice-like richness and a tea-like soft finish after cold brewing, making them a barista-recommended choice for cold brew.
Composition and Key Elements of Iced Latte
The basic makeup of an iced latte is simple: espresso, fresh milk, and ice. But to brew a great-tasting iced latte, every step matters. First is the preparation of the espresso — typically using a double shot basket, with about20 gramsof coffee grounds and an extraction ratio of1:2(to yield)40 grams of espresso. The extraction time is recommended to be controlled within26 to 32 seconds. Too short will result in a thin flavor, while too long can lead to burnt bitterness.
Before making the espresso, dry the portafilter, weigh and grind the coffee, evenly distribute it with a distribution tool, then tamp it firmly with a tamper to ensure stable extraction. Before starting extraction, run water for 1–2 seconds to pre-wet the group head, then lock the portafilter in place and begin extraction. Stop immediately once 40 grams of espresso is reached, then pour the espresso into a cup already containing ice and milk.
Three Tips to Enhance Iced Latte Flavor
1. Choose the Right Coffee Beans: The flavor of the espresso beans directly affects the overall profile of the iced latte. Dark roast blends often bring intense notes of nuts, chocolate, and caramel, suiting those who prefer a heavier taste; whereas medium roast offers a softer acidity and better balance.
2. Master the Milk-to-Coffee Ratio: Use fresh milk with high protein content to enhance the texture and aroma of the milk foam. A common reference ratio is40 grams of espresso, 150 milliliters of fresh milk, and 75 grams of ice, which balances coffee expression and overall drinkability, though adjustments can be made based on personal taste.
3. Pay Attention to Operational Details: Every step — from adding ice, pouring milk, to injecting coffee — needs to be quick and smooth. Especially avoid melting ice too quickly, which can affect temperature and taste. It’s best to pour the espresso into the cup immediately after extraction to maintain optimal flavor.
In summary, although both cold brew coffee and iced latte are great summer coffee choices, their brewing logic and flavor profiles are distinctly different. Cold brew relies on time and low temperature to highlight the purity and subtlety of black coffee, while iced latte combines espresso and milk to create a smooth, refreshing, and cooling drink. With the right recipe, grind size, extraction time, and proportions, you can easily recreate café-quality deliciousness at home.
The above content is compiled by CoffeeHunters, a coffee news website.
