Pick a question you can answer
'Which of these two bags do I enjoy more?' is a good first question. 'Does natural processing cause this flavor?' is harder, because two bags often differ in origin, variety, roast and preparation too.
For a more focused trial, ask a roaster for the same lot processed or roasted two ways. If that is unavailable, compare the coffees you have and list the differences. A useful preference does not need to become a universal scientific claim.
Prepare a fair comparison
Use water you enjoy, two similar heat-safe cups of at least 350 ml, two spoons, a scale and a timer. For the editorial immersion exercise below, use 15 g coffee and 250 g water per cup. This is a practical home comparison, not a professional grading protocol or a claim that one ratio suits every coffee.
Keep the water source, starting temperature and grind setting consistent. For example, choose 93°C if your equipment measures it; record a different practical starting temperature when it does not. A matching grinder setting does not guarantee identical extraction from different coffees. The purpose is to make your preparation comparable, then record what differs.
- Label cups A and B and keep a note identifying the bags. Hide their flavor descriptions until after your first observations if you want to reduce expectation.
- Weigh 15 g of each coffee. Grind with the same grinder and setting, then put each sample in its cup. Smell the dry grounds: this is fragrance.
- Add 250 g water to each cup with as similar a starting temperature and pouring sequence as practical. Start the timer for each; note any delay between them.
- At about four minutes, gently stir the surface of each cup in the same way and smell the released aroma. Let grounds settle. If floating material obstructs tasting, skim each surface similarly with clean spoons.
- Wait until a small sip is comfortably warm. Never use the brewing temperature as a tasting target or force a hot slurp. Use separate clean spoons and avoid swallowing settled grounds.
- Alternate A and B. Describe aroma, acidity, sweetness, bitterness, body and finish, then write your preference separately. Revisit as both cool.
- Record any mismatch in timing or preparation. Repeat a surprising result before attributing it to an origin, process or roast.
Use words that help you compare
A descriptor is a memory aid, not an ingredient list. Coffee can remind someone of cocoa or berries without containing those ingredients; flavored and co-fermented products still require their actual ingredient information.
The World Coffee Research sensory lexicon is a professional reference. You do not need its full vocabulary to make a useful home note.
| Observe | Ask yourself |
|---|---|
| Fragrance | What do the dry grounds smell like before adding water? |
| Aroma | What does the cup smell like? |
| Acidity | Does it feel gently bright, sharply sour, or somewhere between? |
| Bitterness | How noticeable is the bitter taste, and do I enjoy it? |
| Sweetness | Does the overall impression remind me of ripe fruit, caramel or another sweet reference? |
| Body | Does the liquid feel light, rounded, heavy or textured? |
| Astringency | Is there a drying or puckering sensation? |
| Finish | What remains after the sip, and for how long? |
Evidence: WCR Sensory Lexicon
Write a note you can use later
Record the bag's producer/roaster, roast and opening dates, process, recipe, grinder setting and any added milk. Then write one observation and one preference separately.
Example observation: 'A felt brighter and lighter than B; B left a cocoa-like finish.' Preference: 'I liked B with breakfast and milk, but A was more interesting black.' Those notes point to a next purchase without declaring either bag objectively better.
Open the brew and tasting journal and save one entry for each cup. Put the bag and roast/open dates in the name/context fields, the dose and water in the recipe field, and your observation plus preference in the taste note. Keep one planned change in the next-experiment field. All saved entries are displayed newest first; export JSON for a backup and test importing that backup before relying on it.
- Keep a note about context: food, temperature and a changed recipe can alter the comparison.
- If no specific fruit comes to mind, 'fruit-like', 'roasty' or 'nut-like' is enough.
- Save or print your notes before closing a browser tool; storage on one device does not automatically sync.
Do not make taste into a one-word diagnosis
Sourness can reflect the coffee, the recipe or your preference. Bitterness is not proof that every part of a brew was over-extracted. If you want to improve the cup, change one plausible variable and compare again.
A tiny amount of extra brew water or a grind adjustment can answer a different question than buying another coffee. Follow the troubleshooting guide when the cup does not resemble what you normally enjoy.
Finish with a next step
Choose one action: repeat the recipe, try a different roast, ask for a less bright coffee, compare a second processing style, or keep buying the coffee you already enjoy.
Do not turn a single session into a permanent dislike of a country or species. Your record is a growing account of particular coffees and circumstances. It is most useful when it helps you repeat a good cup.
Sources & limitations
This guide combines source-based explanations and practical starting points. Coffee Jacob has not performed hands-on product testing or controlled tasting trials for this guide. Source check: 13 October 2026.