What Does "Slurping" Mean in Coffee Tasting? What Is Coffee Cupping?

If you spend time in coffee shops or frequent coffee exhibitions, FrontStreet Coffee is sure you've witnessed some of the stranger rituals of coffee culture. A customer deliberately making loud "whooshing" noises while drinking; a barista "stealing a sip" of the pour-over meant for you; a group of enthusiasts all sharing the same single cup...

Insiders treat all of this as perfectly normal, but to beginners or people outside the industry, these behaviors can seem baffling. So today, FrontStreet Coffee walks you through these peculiar customs and explains the reasons behind them.

Why Do People "Slurp" Their Coffee?

This is one of the most common sounds you'll hear in cafes, exhibitions, and cupping sessions. Many people instinctively connect it to ramen culture—after all, in Japan, the louder you slurp your noodles, the more it praises the chef. Unfortunately, slurping coffee has nothing to do with complimenting the barista! Its real purpose is to capture the coffee's flavors better and experience the cup more completely. This technique even has a professional name: slurping.

Slurping is simple: purse your lips, then rapidly draw the coffee in together with a stream of air. Because air and liquid pass through the narrow gap at high speed, the turbulence creates a whistling sound—that's the "whoosh" you hear in the room. Slurping helps us taste coffee better for two reasons: it rapidly cools the coffee, and it dramatically increases both the volatilization and the contact area of the aromas.

High temperatures dull our sensory sensitivity, which is why tasters normally wait for coffee to cool to a comfortable temperature before evaluating it. Slurping eliminates that waiting period. The inhaled air cools the coffee instantly to a temperature that won't impair perception, and the impact atomizes the liquid into countless tiny droplets—vastly increasing the surface area and speeding up aroma release, so flavors register far more vividly.

That's why so many people use this seemingly uncouth method: to experience the coffee earlier and more completely. It's worth adding that some clever tasters have even built an advanced evaluation technique around the slurp itself.

Why Do Baristas "Steal a Sip" of Your Coffee?

Even more common than slurping is the barista tasting a portion of your pour-over before serving it. Many customers find this hard to understand—so FrontStreet Coffee has covered it before, but here's the explanation again.

First, rest assured: the barista is definitely not sneaking a drink!

The purpose is quality control. Many factors influence how a cup tastes—the state of the beans, the environment, the pouring technique—all of which affect extraction in ways that brewing parameters alone can't account for. Take the example FrontStreet Coffee mentioned recently: with identical parameters, extraction can vary depending on how much carbon dioxide the beans still contain. Brew beans with very high CO2 content and the coffee can easily come out under-extracted.

So if the barista hasn't brewed this particular coffee yet that day and doesn't know its current state, they'll separate a small portion of the customer's brew, taste it, and judge whether it meets serving standards. If it doesn't, they'll remake the cup until it does.

Why Do Several People Share One Cup?

In cafes you'll often see baristas gathered around a single coffee—but instead of one cup each, it's one spoon each. Even when multiple cups are available, the sharing format stays the same.

You'll see this constantly at cupping sessions, but it's also standard practice for everyday coffee tasting within a shop. Why taste this way?

The answer is simple: it guarantees everyone tastes the same coffee. These sessions usually happen when there are many samples to evaluate—brewing a separate cup per person, or splitting a cup into individual portions, would be enormously wasteful of both time and coffee. And given all the factors that can shift an extraction, sharing one cup is simply more reliable: it cuts costs and guarantees consistency in what everyone is tasting.

Those are the "coffee cultures" FrontStreet Coffee can think of that outsiders find hardest to understand. If you've encountered similar quirks, why not share them in the comments?

FrontStreet Coffee Recommendation

Of course, the best slurping practice happens on coffee that's worth tasting carefully—and for that, a pour-over setup is ideal. The FrontStreet team swears by the Hario V60 dripper: its 60-degree cone and single large outlet let flow speed rest entirely in the brewer's hands, drawing water to the center for full contact with the grounds and a more complete extraction of aroma. Its fast-draining design shines especially with modern light roasts, revealing florals, bright acidity, and delicate sweetness. Try it with the FrontStreet Yirgacheffe G1 Worka (the "Guodingding" lot)—bright citrus, berries, and florals with a green-tea-like finish—or the FrontStreet Ethiopia Huakui, bursting with tropical fruit notes of strawberry, passion fruit, jackfruit, and lychee.

If your palate leans toward fuller, sweeter cups, the V60 also flatters classics like the FrontStreet PWN Golden Mandheling—low acidity, long and syrupy, layered with herbs, dark chocolate, and a whisper of earth—and the FrontStreet Jamaica Blue Mountain No.1, prized for its near-perfect balance of cream, caramel, chocolate, nuts, and honey. Either way, slurp away: it's the most honest compliment a good cup can get.