You and your friends can have a bunch of fun with this system!!!
The University of California at Davis 20 Point Scale System Organoleptic
Evaluation Scoring Guide For Wine The Davis system was developed by Dr.
Maynard A. Amerine, Professor of Enology at the University of California at
Davis, and his staff in 1959 as a method of rating the large number of
experimental wines that were being produced at the university.
The Davis system is quite straightforward. It assigns a certain number of
points to each of ten categories which are then totaled to obtain the
overall rating score for a given wine.
17 - 20 Wines of outstanding characteristics having no defects
13 - 16 Standard wines with neither oustanding character or defect
9 - 12 Wines of commercial acceptability with noticeable defects
5 - 8 Wines below commercial acceptability
1 - 5 Completely spoiled wines
Appearance (2 points) - The wine is given 2 points if it is brilliant, with
no dullness, murkiness, or particles of sediment. If it is clear, but not
flashing with light reflections, it rates 1 point. If full or cloudy it gets
0.
Color (2 points) - Acceptable colors for white wines are varying shades of
yellow, gold, straw. Flaws are any amber tones, indicating oxidation. A rosé
can be a true pink, or by reason of its grape source, tinged with deeper red
or orange.Overly violet tints, brown tints of amber or deep red are faults.
The color of red wines depends greatly upon the grape variety. Pinot Noir
may be light enough to verge on transparency. Cabernet or Zinfandel will be
deep red. Newer or younger wines will often have blue-purple edges, as older
wines will show bronze edges.
Aroma and Bouquet (4 points). Aroma is the sensory impression arising from
the mouth with the assistance of the sinus chimneys. Bouquet is fragrance
detected by the nose. Either may be vinous, smelling like wine, but without
any grape variety characteristics. The intensity may be light, medium, or
high. Negative factors are odors that can be described as alcoholic,
excessively woody, moldy or corked.
Volatile Acidity (2 points) - This is the term for Vinegary-ascensence. Does
the wine smell of vinegar? If not, it rates 2 points. A slight vinegar smell
will rate 1 point. If it smells of vinegar it rates 0.
Total Acidity (2 points) - Felt in the mouth, around the edges of the
tongue, it is wine's refreshing zing. If low, the wine is flat, flabby or
soapy. It can be too high with unpleasant sharpness.
Sweetness/sugar (1 point) - Sugar and total acidity go together. Overly set
for the wine's type is a fault, as is overly dry.
Body (1 point) - This is the wine's viscous nature identified as mouth-feel,
also the binges, or alcoholic strength.
Flavor (1 points) - The flavor should correspond with the bouquet and aroma,
being clean, fruity, full or balanced. It should not be metallic, steamy, or
alien in character.
Astringency (2 points) - Tannins give a wine astringency (or bitterness),
and so does the wood in which wine is aged. Younger wines will be rougher
than older wines. The ideal is mellow softness, velvet, roundness. A young
wine is not discounted for a natural tannin.
General Quality (2 points) - The only category for subjective appraisal,
adjusting the score on the basis of the wine's total performance.
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