Learning module
Practice this topic →Read the concept, complete the knowledge checks, then practice the same skill in Coffee Lab.
Sensory quality
01 · The machine gives numbers. Your palate decides whether they are good.
The machine gives numbers. Your palate decides whether they are good.
Use sensory language consistently so recipe changes are explainable and repeatable across baristas.
02 · Six sensory dimensions to track
Six sensory dimensions to track
BodyWeight and tactile presence.
AcidityBrightness, lift and fruit-like sharpness.
SweetnessNatural or added sweetness and balance.
BitternessRoast/extraction intensity; useful in balance, unpleasant in excess.
Flavor identityChocolate, floral, caramel, nutty, fruit, spice, etc.
FinishWhat remains after swallowing: clean, dry, sweet, harsh or lingering.
03 · Fast diagnosis
Fast diagnosis
| Symptom | Possible cause | First checks |
|---|---|---|
| Sour / thin espresso | Under-extraction or low strength | Grind, extraction time, dose, water/contact |
| Harsh / dry / overly bitter | Over-extraction, too fine, excessive heat | Grind, time, dose, beverage temperature |
| Milk drink tastes flat | Too much milk, weak espresso, over-sweetened | Shot count, milk ratio, sweetener |
| Iced drink gets watery fast | Too much ice/dilution or weak base | Ice level, recipe strength, serving speed |
| Flavor syrup dominates | Too much syrup or too weak a base | Syrup, shot count, milk volume |
A shot hits exactly 28 seconds. Is it automatically correct?
Practice Lab · RasoKarsa Craft
Launch Simulation →Sensory Diagnosis Lab
Use extraction clues and customer feedback to diagnose sour, thin, bitter, harsh or unbalanced cups.