Coffee Terminology Explained: The Complete Guide
Every Koffee Review uses specific language. Extraction. Body. Microfoam. Crema. These are not fancy words for the sake of it — each one describes something real about what is happening in your cup.
If you have ever read one of our reviews and wondered what balanced with a clean finish actually means, this guide is for you. We have reviewed 600+ cafes using these terms. Here is what every single one means.
Extraction — The Foundation of Everything
Extraction is the process of pulling flavour from ground coffee using hot water. When a barista pulls an espresso shot, water passes through finely ground coffee under pressure. The flavours, oils, and compounds dissolve into the water. That is extraction.
Under extraction means not enough flavour was pulled out. The shot tastes sour, thin, and watery. The coffee grounds still had good stuff left in them but the water moved through too fast or the grind was too coarse.
Over extraction means too much was pulled out. The shot tastes bitter, harsh, and astringent. The water sat in the coffee too long or the grind was too fine, pulling out compounds that taste unpleasant.
Proper extraction is the sweet spot. Balanced flavour, natural sweetness, clean finish. This is what we score highest in our reviews.
When we write well extracted in a review, we mean the barista nailed the timing, temperature, and grind. When we write under extracted, it means the shot was rushed or the grind was wrong. For example, Clancys Espresso in Norman Park scored 7.9 partly because extraction was consistently clean across both drinks.
Crema — The First Thing You See
Crema is the thin layer of golden brown foam on top of an espresso shot. It forms when hot water emulsifies the oils in freshly ground coffee under pressure.
Good crema is thick, golden, and consistent. It should hold for at least 30 seconds before dissipating. The colour tells you about the roast — lighter crema usually means lighter roast, darker crema means darker roast.
Thin or pale crema often means stale beans, wrong grind, or poor machine pressure. No crema at all is a red flag — the beans are probably old or the machine needs servicing.
We note crema quality in our reviews because it is the first visual indicator of whether the cafe is using fresh beans and maintaining their equipment. Thick, tiger striped crema is a good sign before you even taste anything.
Body — How Coffee Feels in Your Mouth
Body describes the weight and texture of coffee on your tongue. It is not about flavour — it is about mouthfeel.
Full body means the coffee feels heavy, rich, and coating. Think of the difference between skim milk and cream. Full bodied coffee has presence.
Light body means the coffee feels thin, clean, and almost watery. This is not always bad — some light roast single origins are intentionally light bodied to highlight delicate flavours.
Medium body is the most common and usually the most balanced. It has enough weight to feel satisfying without being heavy.
When we write smooth body in a review, we mean the coffee has a pleasant, even weight across the palate. When we write thin body, it usually means the espresso was under extracted or the beans lacked depth.
Microfoam — The Difference Between Good and Bad Milk
Microfoam is steamed milk with extremely fine, uniform bubbles. It is what separates a properly made latte from a cup of hot milk with froth on top.
Good microfoam has a glossy, paint like texture. When you pour it, it flows smoothly and integrates with the espresso. The bubbles are so small you cannot see them individually. This is what makes latte art possible.
Bad foam has large, visible bubbles. It sits on top of the espresso instead of mixing in. The texture is rough and bubbly instead of smooth. This is what most cheap cafes serve.
We test milk technique through the latte order specifically because microfoam quality tells you how skilled the barista is. Steaming milk properly requires practice, the right wand angle, and attention to temperature. When we write excellent microfoam in a review, we mean the barista has genuine skill.
For example, Bang Coffee Bar in Coorparoo consistently demonstrates strong milk technique across every visit.
Finish — What Happens After You Swallow
Finish (also called aftertaste) is the flavour that remains in your mouth after swallowing the coffee. It is one of the most important quality indicators.
Clean finish means the flavour fades smoothly without any unpleasant lingering tastes. The coffee leaves your palate feeling fresh. This is what we score highest.
Bitter finish means harsh, astringent flavours linger. Usually a sign of over extraction or dark, stale beans.
Sour finish means sharp, acidic tastes remain. Usually under extraction or beans that were roasted too light for the brewing method.
Long finish means the good flavours keep developing after you swallow. This is a sign of high quality beans and excellent extraction. The best cafes in our system have a finish that makes you want another sip immediately.
Balance — The Holy Grail
Balance means no single flavour dominates. The acidity, sweetness, bitterness, and body are all in proportion. Nothing sticks out. Nothing is missing.
A balanced espresso is not boring — it is controlled. Every element is present but none overpowers the others. This is the hardest thing to achieve consistently and it is why balanced is one of the highest compliments in our reviews.
Unbalanced coffee has one element that dominates. Too acidic, too bitter, too sweet, or too thin. Most cafes we review are slightly unbalanced in one direction. The great cafes nail the balance every time.
When we write balanced throughout in a review, we mean the cafe has achieved something most cannot. It usually indicates fresh beans, correct extraction, and a barista who knows what they are doing.
Single Origin vs Blend
A single origin coffee comes from one specific farm, region, or country. It has a distinct flavour profile that reflects where it was grown. Ethiopian single origins might taste fruity and floral. Colombian might taste nutty and chocolatey.
A blend combines beans from multiple origins to create a consistent, balanced flavour profile. Most cafe house coffees are blends because they are easier to dial in and produce reliable results day after day.
Neither is inherently better. Single origins offer complexity and uniqueness. Blends offer consistency and balance. We score both on the same criteria — extraction, body, balance, and finish.
When a cafe uses a quality blend, it tells you they prioritise consistency. When they offer single origins, it tells you they want to showcase specific flavours. Both approaches can score 7.5+ in our system.
For example, Passport Specialty Coffee in Northgate demonstrates how bean freshness matters regardless of whether it is a single origin or blend.
Dial In — The Daily Calibration
Dialling in is the process of adjusting the grinder, dose, and extraction time at the start of each day (or when switching beans) to achieve the perfect shot.
Coffee beans change constantly. Humidity, age, roast date, and temperature all affect how they grind and extract. A setting that worked yesterday might produce a sour shot today. Dialling in compensates for these variables.
A cafe that dials in properly every morning will serve consistent espresso all day. A cafe that does not will serve shots that vary wildly from hour to hour.
When we visit a cafe at different times and get consistent scores, it usually means they dial in properly. Inconsistent scores across visits suggest they are not adjusting daily.
Channelling — The Invisible Problem
Channelling happens when water finds a path of least resistance through the coffee puck instead of flowing evenly through all the grounds. The result is uneven extraction — some coffee is over extracted while the rest is under extracted.
You can sometimes spot channelling by watching the espresso pour. If the stream splits, spurts, or comes out unevenly, water is channelling through the puck.
The taste effect is a muddy, confused shot. Some sour notes, some bitter notes, and no clear flavour profile. It happens when the barista does not distribute or tamp the grounds evenly.
When we write uneven extraction in a review, channelling is often the cause. It is a technique issue that trained baristas avoid through consistent distribution and tamping.
Grind Size — The Variable That Changes Everything
Grind size is how finely or coarsely the coffee beans are ground before brewing. It directly controls extraction speed and flavour.
Finer grind means water passes through more slowly, extracting more flavour. Too fine and the shot over extracts (bitter, harsh). Espresso uses a fine grind.
Coarser grind means water passes through faster, extracting less. Too coarse and the shot under extracts (sour, weak). Filter coffee uses a coarser grind.
The right grind size depends on the beans, the roast date, the humidity, and the machine. This is why dialling in matters — the grind that works in the morning might need adjusting by afternoon.
When we write well ground or grind consistency is sharp in a review, we mean the cafe is paying attention to this variable. Inconsistent grind is one of the most common reasons cafes score below 6.0 in our system.
Putting It All Together
Every term in this guide connects to the same thing: what is in your cup.
A great cafe extracts properly, produces thick crema from fresh beans, steams microfoam that integrates with the espresso, and delivers a balanced cup with a clean finish. Every term we use in our reviews describes one piece of that process.
A bad cafe skips one or more of these steps. Stale beans (thin crema). Rushed extraction (sour, thin body). Poor milk technique (bubbly foam). No dialling in (inconsistent shots).
Now when you read a Koffee Review, you know exactly what we mean. And more importantly, you know what to look for when you walk into a cafe yourself.
One latte. One double shot. Every time. No exceptions.