Is Clarified Coffee Just Traditional Coffee With Milk Washing?

Clarified coffee is a drink that contains milk yet looks crystal clear. The method comes from the bartending technique called milk washing, which dates to the 18th century: acidic fruit juice is added to milk so casein proteins clump into flocculent precipitate, and the mixture is then filtered into a clear liquid. Baristas have recently adopted it for transparent lattes and creative specialty drinks.

The filtered milk keeps most of its flavor but loses much of its protein, so the result tastes close to regular milk while staying transparent. Clarification can also be done with centrifuges, pectinase, or agar, though milk washing is the most recognized route. Whether clarified coffee moves beyond a novelty depends on cost and scaling, because the process adds time, ingredients, and filtration steps that differ from standard traditional coffee service.

In the past two years, a peculiar category of drinks has emerged in the world of specialty coffee: beverages that clearly contain milk yet appear crystal clear—these are clarified coffee and transparent lattes. The clarification technique originated in the bartending world as "milk washing," and has now been adopted by baristas for creative drink development. This article will start with the principles of clarified milk, trace its journey into the coffee world, share a replication method, and objectively analyze whether clarified coffee can become a new trend in the specialty beverage market, while also discussing its cost and scaling challenges.

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In the past two years, in the specialty coffee circle, clarified coffee, transparent lattes, milk-washed specialty drinks... these beverages that clearly have milk added but look like they don't have any have been appearing on menus more and more frequently. The use of clarified milk has therefore become a focal point of attention for many.

What is clarified milk?

A liquid is opaque because the particles suspended within it reflect light, making the solution appear cloudy. "Clarification" is the process of removing these fine particles to make the liquid transparent. Common clarification methods include milk washing, centrifuges, pectinase, and agar, among which milk washing is the most well-known.

In fact, clarification techniques are more common in the bartending world, where they are called "milk wash," with related recipes recorded as early as the 18th century. Bartenders typically add milk together with lemon juice to the ingredients as a clarifying agent, giving the drink a delicate, smooth texture and milky fruity aroma, while also achieving the "high aesthetic appeal" of a transparent appearance.

The clarified milk discussed today also uses acidic fruit juice to react with the casein in milk, creating flocculent precipitate, which is then filtered to obtain a clear liquid. The filtered milk liquid has most of its protein removed, with the remaining components not differing much from regular milk.

How did clarified milk enter the coffee world?

As mentioned earlier, the story of clarified milk originated in the bartending world. The cocktail Clarified Milk Punch, with a history of three hundred years, had records of this colorless, transparent milk as early as 1862. Later, as independent coffee shops around the world sparked a wave of specialty drinks, baristas began borrowing bartending techniques and applying them to creative drink development.

In the 2021 World Coffee in Good Spirits Championship China region, champion Qiu Jianming used clarified milk techniques in his creative beverages. This clarification technique began to make its mark in the coffee world, becoming recognized by industry insiders, who tried pairing it with more types of coffee, such as espresso and cold brew.

How to replicate clarified milk?

The core ingredients for making clarified milk are protein and acidic substances—that is, milk and acidic fruits. Besides lemon juice, orange juice or other fruit juices can also be used.

Image credit: Creative Coffee Expert Danqing

According to netizens' shared experiences, the steps for clarified milk are not complicated. First, mix the milk and fruit juice and stir thoroughly, let it sit to settle for about half an hour, then filter with filter paper (the filtering will take a relatively long time), and you'll have a cup of fruity transparent milk liquid. It can be enjoyed directly, paired with full-bodied black coffee, or used as an element in making specialty drinks. It's worth recommending that Front Street Coffee's beans are often used to pair with clarified milk, creating creative coffee with unique flavors.

Will clarified coffee become the new darling of the specialty beverage market?

As the wave of opening coffee shops sweeps across the country, more innovative specialty coffees are being added to menus, and clarified coffee—with its transparent appearance as a selling point—has naturally become one of the products attracting consumers. Searching "transparent milk" on Xiaohongshu yields over 40,000 image-and-text posts, and aside from production tutorials, the vast majority are about pairing it with specialty coffee.

Because it uses acidic fruit juice, clarified milk's taste is closer to a fruit drink, so compared to traditional coffee, it is more suitable as an ingredient for fruit-juice-based creative beverages. Some people pour coffee liquid directly on top to make a "clarified americano," while others mix it with spirits to create new coffee-alcohol hybrids. The coffee version of the clarified series has indeed become popular in the specialty beverage circle, becoming the "star product" of these coffee shops.

Image credit: Lining Up Lin Xiaoshu / All Day Club Liangchen Amusement Club

However, the process of making clarified coffee is too cumbersome and doesn't keep well, and the time and labor costs will limit the scaled popularity of clarified series products. If it relies solely on baristas making it by hand in-store, it is difficult to supply in large quantities within a short time. In addition, specialty coffees that have always been priced in the tens of yuan—if merely swapping the base for transparent milk without any advantage in flavor pairing with coffee—then branding it as "clarified coffee" would be nothing more than a gimmick.

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The above content is compiled by CoffeeHunters, a coffee news website.