Concentration: density, not quantity
The standard
Perceptible density measures the substance per volume, not the total amount in the glass.
Criteria
- The substance is judged per volume, not as a total quantity
- Concentration is independent of alcohol and body
- It shows in the fullness of flavour, not in its force
- It is derivable from the extract, not from the label
Distinction
Concentration ≠ extract: extract is the measurable mass of dissolved solids, concentration its perceptible density on the palate. Perceptible density translates the measured value into the sensory impression. Concentration ≠ power: a wine can seem dense without being forceful.