How Americano Coffee Caffeine Meets Lactic Acid Bacteria

Luckin Coffee has quietly released a lactic acid bacteria Americano in Shanghai, sold only as a regional limited-edition iced drink. The product combines plant-based lactic acid bacteria with coffee and is marketed for a refreshing, greasy-cutting effect. Early tasters describe a sweet-and-sour taste, and some find the coffee aroma weaker than expected, while others point to the combined bowel-stimulating effect of the bacteria and the caffeine.

Mixing yogurt-style drinks with espresso is already common in coffee innovation, so the concept drew limited surprise. Reported effects varied widely: some drinkers noticed an immediate response, others noticed nothing. Because the drink is Shanghai-only for now, customers elsewhere are waiting to see whether Luckin Coffee expands it nationwide, which would be the clearest sign of how the test performed.

Luckin Coffee has recently quietly launched a lactic acid bacteria Americano in Shanghai, combining plant-based lactic acid bacteria with coffee, touted for its refreshing and greasy-cutting properties. This regional limited-edition iced drink has attracted attention as soon as it was discovered. Some people find the sweet-and-sour taste unique, while others think the coffee aroma is insufficient. Some netizens even noticed the dual bowel-stimulating effect of lactic acid bacteria and caffeine, jokingly calling it a new generation "smoothness miracle." The effects of the new product vary from person to person—some who tried it reported immediate results, while others said they felt nothing. Consumers in other regions are hoping for a nationwide rollout.

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Luckin Coffee is known for its high-frequency product launches, and its rapid iteration speed is evident to all. Although regular customers occasionally poke fun at the R&D team's new creations, once a new product hits the market, they set aside their previous impressions and rush to be the first to try it, then post their genuine feelings online as a reference for other netizens.

Currently, Luckin is still heavily promoting its butter series drinks, but recently sharp-eyed users noticed that a lactic acid bacteria Americano has quietly been put on the menu, and the news immediately attracted quite a bit of attention.

According to current information, this new product is only available in Shanghai stores and is a regional limited-edition iced drink. The official description shows that the drink contains imported patented plant-based lactic acid bacteria, has a sweet-and-sour taste, and its selling point is "refreshing and greasy-cutting."

The pairing of lactic acid bacteria with coffee is actually nothing new in the field of innovative coffee. People on social media have long tried mixing yogurt drinks like Yakult with espresso to create sweet-and-sour coffee specials. So for coffee lovers who have seen all kinds of combinations, many feel that Luckin's newly developed product lacks a bit of surprise this time.

Consumers who have already tried it feedback that just looking at the recipe, you might think it's a "dark cuisine," but when actually drinking it, due to the effect of the lactic acid bacteria, the coffee aroma of the whole drink is relatively weak, while the sourness is more prominent. Those who can't quite accept sourness admit they don't enjoy it, but those who like a refreshing taste are very enthusiastic, suggesting that friends visiting Shanghai recently should give it a try.

Just as everyone was discussing the taste of this strange combination, some netizens discovered a highlight from another angle: lactic acid bacteria can help with bowel movements, caffeine has a similar effect, and adding the essential ice cubes, this new product has basically maxed out the "smoothness" effect.

For some fans, drinking Luckin every day isn't about staying awake—it's about keeping their digestive system regular. So after seeing the "lactic acid bacteria + Americano" combination, many exclaimed "it sounds like it really gets things moving" and "feels like it's very helpful for cleansing the gut," guessing that Luckin's "gut-relief drink ranking" might soon have a new member.

Afterward, many netizens who tried it personally confirmed through their own experiences that this combination indeed delivers immediate results. Some said, "I bought a cup to try, and an hour later I couldn't hold it in at all," and noted that the laxative effect of the new product was even more obvious than the previous prune Americano.

However, those who call themselves "iron stomachs" felt the new product's effect wasn't that miraculous, saying "I drank two cups a day and felt nothing." It's clear that the "smoothness" effect of the lactic acid bacteria Americano varies from person to person and may not solve the troubles of all constipated people.

Although local Shanghai users who tried it felt it wasn't as effective as the previously ranked "Poop Water," Luckin fans in other regions are still intrigued and have expectations for this lactic acid bacteria Americano, hoping the brand will roll it out nationwide soon so they can also experience just how intense the "smoothness" effect really is.

Image source: Xiaohongshu

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