Cupping is how the coffee industry evaluates coffee, and it is almost comically low-tech: ground coffee in a bowl, hot water poured on top, a spoon.
That simplicity is the point. Every brewing method is a set of decisions — grind, ratio, agitation, filtration — and each one changes the result. Cupping strips all of it away so the only variable left is the coffee.
You can do it at your kitchen table this afternoon, and it will teach you more than a year of drinking cups one at a time.
What you need
- Identical vessels. Bowls, wide mugs, tumblers. Identical matters more than anything about them — different shapes cool at different rates and change the comparison.
- A soup spoon, ideally deep and round.
- A kettle.
- A grinder. Burr if possible.
- A scale, helpful but not essential.
- A cup of clean water for rinsing the spoon.
- At least two coffees. Cupping one coffee alone teaches you very little. Everything here is comparative.
The protocol
1. Grind coarse. Coarser than filter — the SCA calls for about 70–75% passing a 20-mesh sieve, which in practice is a coarse, gritty texture. Grind each coffee immediately before you pour, not all at once at the start.
2. Dose. 10 g per bowl for 180 ml of water. Use the same dose for every bowl. If you are comparing seriously, use two bowls per coffee, because coffee is variable and one bowl can lie.
3. Smell the dry grounds. Nose right into the bowl. Note what you get before any water is involved — this is the fragrance, and it is often where the most distinctive aromatics are loudest.
4. Pour. Water at 93°C, straight onto the grounds, filling to the rim. Pour with some force to make sure everything is wetted. Do not stir.
5. Wait four minutes. A crust of grounds will form on the surface. Leave it. Underneath, extraction is happening.
6. Break the crust. At four minutes, put your nose directly over the bowl, push the crust back gently with the spoon, and stir three times. A burst of aroma comes up as the crust breaks. This is the single most informative moment in cupping and you get one shot at it per bowl.
7. Skim. Use two spoons to lift off the foam and floating grounds, and discard them.
8. Wait until it cools to about 70°C. Roughly eight to ten minutes from the pour. Coffee that is too hot anaesthetises the palate and tells you nothing.
9. Slurp. Take a spoonful and slurp it sharply, spraying it across your whole mouth. It sounds absurd and it is essential — aerosolising drives volatile compounds into the nasal cavity where most flavour perception actually happens.
10. Taste again as it cools. At 70°C, at 50°C, and at room temperature. Different compounds become perceptible at different temperatures, and coffees that seem identical hot often separate completely as they cool. Do not skip this — it is where most of the learning is.
11. Rinse the spoon between bowls. In the water cup. Always.
What to assess
Use the professional attributes as a checklist, not as a scoring exercise:
Fragrance/Aroma — dry, then at the crust break.
Flavour — the main impression. Reach for specific comparisons rather than "good." Chocolate or caramel? Which fruit?
Aftertaste — how long it lasts and what it leaves behind.
Acidity — not how much, but what kind. Bright and structural, or sour and flat?
Body — run your tongue across the roof of your mouth. Thin, silky, syrupy?
Balance — do the parts belong together?
Sweetness — present or absent.
Clean cup — anything off, musty, papery, fermented in a bad way?
Write it down. Memory for flavour is unreliable across even ten minutes, and the notes are the whole value.
Comparisons worth running
The three species. Robusta, Arabica and Liberica side by side. The most instructive cupping available to a Vietnamese coffee drinker, and the differences require no vocabulary to notice. The comparison guide frames it.
Same coffee, two processes. A washed and a honey lot from the same region isolates what processing does with everything else held constant.
Washed against co-ferment. The most dramatic single comparison in Vietnamese coffee, and the fastest way to understand what fermentation is actually contributing.
Fresh against old. A bag roasted last week against one roasted two months ago. Nothing makes the case for roast dates faster.
The same coffee, hot and cool. Not a comparison between coffees at all, but the one most people never run, and it changes how you drink everything afterwards.
Being realistic
You will not agree with a professional grader, and that is fine. Q graders train for years and calibrate constantly against other graders.
What you are building is not scoring accuracy. It is a personal reference library — a set of remembered comparisons that make the next coffee legible. After a dozen cuppings you will taste a coffee and think "that is the same fruit note as the peach co-ferment" and you will be right, and that is the entire skill.
Start with two coffees that are obviously different. The subtle comparisons come later, and they only make sense once the obvious ones are in your memory.
Set up the bowls, boil the kettle, and slurp loudly.
