Introduction:Recently, Luckin Coffee introduced a 16oz (large) size option for its premium SOE "Little Black Cup" series, with the Yirgacheffe flavor even offering a limited-time free upgrade to the larger cup. However, many customers have reported that the upgraded cup is noticeably weaker, with the characteristic citrus and floral notes of Yirgacheffe almost disappearing. What’s behind the change in concentration when upgrading the cup size? This article will take you through the actual performance of the large black cup, extraction details, and situations where the small black cup might still be the better choice.
Luckin Coffee’s SOE Little Black Cup series has long been known for its single-origin specialty coffees, particularly the three popular Ethiopian beans: Yirgacheffe, Huākuí (Hakurei), and Geisha. With their bright acidity, citrus, and floral profiles, these beans have won the favor of many coffee enthusiasts. Compared to regular blends, these SOE (Single Origin Espresso) offerings are typically about 20% to 30% more expensive and are known for their intense flavor in a small 12oz (about 340ml) cup—this is their main appeal.
However, recently, Luckin quietly added a 16oz (about 473ml) large cup option to this premium product line. For the Yirgacheffe flavor, customers can even choose a free upgrade to the large black cup when ordering classic drinks such as Americano, latte, and flat white. On the surface, this appears to be a great deal—"more for the same price"—but after actual tasting, many loyal customers have expressed disappointment, feeling that the coffee flavor has been significantly diluted, with some even questioning whether “the upgrade is just more water.”
Based on consumer feedback, although the upgraded large black cup is nearly 30% larger in volume, the overall coffee concentration has dropped substantially. The usual bright citrus aroma, honey-like sweetness, and vibrant acidity that Yirgacheffe is known for are almost undetectable in the larger cup. Social media platforms have seen numerous comments such as “tastes like weak black water with too much water added,” “completely lacks the layered taste it used to have,” and “the flavors are too diluted after the upgrade,” showing that this cup size expansion hasn’t been well-received across the board.
In response to this phenomenon, a store employee explained on social platforms that although the coffee grounds’ extraction weight was slightly increased for the large black cup, the increase was minimal and far from proportional to the rise in cup size. It is understood that the volume difference between the large and small cups is about 113.4ml, but the additional liquid is mostly made up with water or milk, resulting in a lower proportion of concentrated coffee extract and thus affecting the intensity of the flavor.
Simply put,the amount of coffee grounds was indeed increased, but not enough to support the 16oz capacity,so the difference is made up with water or milk, ultimately making the originally prominent Yirgacheffe flavors flat and unremarkable. For consumers who prefer a stronger taste or wish to enjoy the nuanced flavors of single-origin beans, this cup upgrade may actually reduce the overall drinking experience.
It’s worth noting that the SOE Little Black Cup series has always been positioned as a more premium product line under Luckin, unlike the chain’s regular drinks that focus on “large-size value.” It emphasizes the unique characteristics of single-origin beans, making it ideal for those looking to explore the authentic flavors of coffee. While the introduction of the large cup option may seem like a good deal price-wise, if what you’re after is depth and complexity in flavor, sticking with the original 12oz Little Black Cup might still be the better option.
In summary, if you’re a fan of Yirgacheffe and especially value its bright fruit acidity, floral notes, and citrus profile,it is recommended that you temporarily avoid the 16oz large black cup,unless you prefer a lighter, more watery coffee experience. Otherwise, the original, full-flavored little black cup is what will truly showcase the potential of this bean and better meet your expectations for specialty coffee.
The above content is compiled by CoffeeHunters, a coffee news website.
