How to Cup Coffee: The Professional Tasting Method, at Home

Cupping is the coffee industry's standard way of tasting: you steep ground coffee directly in a cup of hot water, break the crust of grounds after four minutes, skim off the foam, and taste the coffee from a spoon as it cools. Nothing about it is complicated. What makes it useful is that every cup is prepared in exactly the same way, so any difference you taste comes from the coffee rather than from the brewing.

Why cup instead of brew?

Every brewing method adds its own variables. A pour-over depends on the pour, an espresso on the puck, a French press on the plunge. When a green coffee buyer compares twenty samples, or a roaster checks today's batch against last week's, those variables get in the way.

Cupping removes them. It is a plain immersion brew — water and coffee in a cup, no filter — with the ratio, grind, water temperature and timing fixed in advance. That makes it slightly crude as a way to make a drink, and excellent as a way to compare coffees side by side.

What you need

The Specialty Coffee Association's long-standing protocol specifies:

• Cups of 7–9 fl oz (207–266 ml), ideally with lids. Professionals cup five cups per coffee to check for consistency; at home one or two is plenty.
• Spoons that hold 4–5 ml — wide and shallow, more like a soup spoon than a teaspoon.
• A scale accurate to 0.1 g, a grinder, a kettle, a timer, and something to spit into if you are tasting many coffees.

Clean, filtered water matters too: the protocol calls for odour-free water with no chlorine, ideally around 150 ppm of dissolved minerals. The water guide explains why.

The standard recipe

The ratio deserves a closer look: 8.25 ÷ 150 = 0.055 g per ml, which is 55 g per litre — the same strength as the classic brewing standard for filter coffee in the coffee-to-water ratio guide. For a 200 ml cup, 200 × 0.055 = 11 g.

One practical catch: the ratio is coffee to water, not coffee to cup size. Grounds take up space — Royal Coffee's guide notes that 11.5 g of coffee in a 200 ml glass displaces about 15 ml — so a cup filled to the brim holds a little less water than its capacity.

The protocol also standardises the roast, for professional use: coffee roasted for 8–12 minutes, 8–24 hours before cupping, to a specified colour. At home, simply cup coffees of similar roast and age against each other.

How to cup, step by step

1. Smell the dry coffee. Grind each cup separately, straight into its cup, and smell it. This is the fragrance.
2. Pour. Fill each cup with water just off the boil, wetting all the grounds, and start the timer.
3. Wait four minutes. A crust of grounds forms on top.
4. Break the crust. Push gently but firmly through it with the back of a spoon, with your nose right over the cup. The rush of aroma released here is one of the most informative moments of the whole tasting. Rinse the spoon between cups.
5. Skim. Use two spoons to lift off the remaining foam and floating grounds.
6. Let it cool. Tasting usually begins at around 170 °F (77 °C), often 10–15 minutes after pouring. Very hot coffee hides much of its flavour.
7. Slurp. Take a spoonful and slurp it hard, spraying it across your palate. Then spit or swallow.
8. Taste again as it cools. Coffee changes as it cools, and tasting each cup two or three times shows you how — some coffees improve, some fade.
9. Write it down. Even a few words per cup makes the comparison real.

Why slurping works

Slurping looks like bad manners and is the single most useful technique in cupping. Aspirating the coffee across your palate cools it a little before it lands, mixes it with air, which helps aromas open up, and spreads it across most of your tongue at once.

Most importantly, it pushes aroma up the back of the throat into the nose. Much of what we call flavour is smell detected that way, which is why coffee tastes of little when you have a cold.

What to taste for

Cuppers move through the same questions for every cup:

• Aroma and flavour — what does it remind you of? Fruit, chocolate, nuts, flowers, spice?
• Acidity — is it bright and lively, flat, or sharp and sour? The bitter or sour guide explains the difference between pleasant acidity and sourness.
• Sweetness — how much, and what kind?
• Body — light and tea-like, or heavy and syrupy?
• Aftertaste — how long does the flavour last, and is it pleasant?
• Balance — does anything stick out?

Comparison is what makes this easy. One coffee on its own is hard to describe; next to a second coffee, the differences jump out.

What tasting notes actually mean

The words on a coffee bag — blueberry, jasmine, milk chocolate — are not ingredients. Coffee labelled with fruit notes contains nothing but coffee. The notes describe aromas and tastes the coffee shares with other foods, in the same way a wine can smell of blackcurrant.

That vocabulary has become more rigorous. In 2016, World Coffee Research released its Sensory Lexicon, developed with sensory scientists at Kansas State University, which defines 110 attributes of coffee flavour, aroma and texture. Each comes with a reference product for calibrating tasters: in the first edition, the reference for "cherry" was a specific tart cherry juice, and the reference for "skunky" was, memorably, a latex balloon. A 2017 revision updated the references for 24 attributes. The SCAA used the lexicon, plus a follow-up study at UC Davis to group the terms, to rebuild its Coffee Taster's Flavor Wheel the same year. It was the wheel's first redesign in about twenty years.

So when a roaster says a coffee tastes of blackberry, the honest reading is: some of its aromas resemble blackberry, to that taster. Your own experience of blackberry will shape what you find.

Scores, and the new way of cupping

For twenty years, professional cupping meant the SCAA's 2004 cupping form, which scored a coffee out of 100. Coffees scoring 80 or more were considered specialty — the specialty coffee guide explains that threshold.

In November 2024 the Specialty Coffee Association formally replaced the 2004 form and protocol with the Coffee Value Assessment, three standards that separate sample preparation, a descriptive assessment of what the coffee tastes like and how intensely, and an affective assessment of how much the taster values it. The aim, in the SCA's words, is a holistic picture of a coffee rather than a single quality score. In 2025 the SCA took over the Q grader certification from the Coffee Quality Institute and rebuilt its courses around the new system.

For home tasting none of this changes the method. The cup, the spoon, the four minutes and the slurp are the same.

A first cupping at home

Pick two or three coffees that differ in one clear way, and cup them side by side:

• Process: a washed and a natural coffee from the same country. The processing guide explains what to expect.
• Origin: an Ethiopian next to a Colombian.
• Roast: the same coffee at two roast levels.

Label the cups underneath so you do not know which is which, taste them in silence, write your notes, then compare. After a few sessions, the words on coffee bags start to mean something.