Vinification/Basics Of Tasting/Viticulture Flashcards
Five concepts of taste
Sweetness
Sourness
Saltiness
Bitterness
Umami
Kokumi (tbd)
Steps of tasting
Consider the taste and flavor
Assess the aroma
Gauge the body/weight
Feel texture
Focus on the finish
Confirm colour
Flaws and faults: canned asparagus
Grapes picked while unripe
Flaws and faults: dirty socks
Ranging from bacterial contamination to uncleaned barrels
Flaws and faults: fake butter/rancid vegetable oil
Excessive diacetyl produced in malolactic fermentation
Flaws and faults: nutty aromas
Shows oxidation, often with premature brown cast
Flaws and faults: volatile acidity
Vinegar aromas (commonly balsamic)
Acetic acid bacteria contact with oxygen
Flaws and faults: wet cardboard or damp basement
“Corked” TCA (2, 4, 6 - trichloroanisole)
Detectable at 5-10 parts per trillion
Also potentially “light strike” - UV exposure
Oak flavor compounds
Furfural - dried fruit, burned almond
Guaiacol - burn overtones
Oak lactone- woody, dill, coconut (US)
Eugenol - spices, cloves, smoke
Vanillan- vanilla flavors
Ullage
Resulting space from evaporation within barrel
Potentially harmful oxygen, typically barrels are topped up to prevent
Malolactic Fermentation
Same malic acid as in green apples
Secondary fermentation that transforms puckery malic acid into softer lactic acid
Bâtonnage
Stirring the lees in barrels
Lees are the dead yeast left from fermentation
Chaptalization
Addition of sugar to compensate for underripe grapes
Raises alcohol of final wine
Phenols, phenolic ripening
Phenols are the complex molecules that contribute bitter flavors
Includes tannins
Transition as the grape ripens
Phylloxera
Grape louse that destroys the root stalks of vines, killing the plant
Jeroboam
3L - 4 bottles
Rehoboam
4.5 L
6 bottles
Salamanazar
9 L
12 bottles
Balthazar
12 L
16 bottles
Nebuchadnezzar
15 L
20 bottles
Melchior
18 L
24 bottles
Growing season for vines (range in days)
150-190 days
Maritime Climate (W, R, TC, S)
Near large body of water
Narrow temperature changes (not varied)
Moderate winters, warm summers
High than average rainfall
Longer growing season
Mediterranean Climate
Dry, warm summers, wetter moderate winters
Heat tolerant grapes
High than average rainfall
Continental climate
Inland, far from large body of water
Cold winters, hot summers
Lower than average rainfall
Shorter growing season
Macro \
Meso. |—-> Climates
Micro /
Macro - wine region
Meso - vineyard area
Micro - around the individual vines
Smoke taint
Affect of forest fires near vineyards
Mostly dangerous when the grapes are in veraison
Smoky odors
Major Vine Diseases
Esca+Eutypa dieback (vine trunk disease
Pierce’s disease (leaf hopper bacteria)
Leaftroll virus (red leaves)
Organic vs. Biodynamic vs. Sustainable
All don’t use synthetic chemicals
Bio incorporates the idea of the vineyard as an ecosystem (mesoclimate)
Bio also uses the lunar cycles for harvest
Sustainable uses renewable energy sources
Dry Farming
Never irrigate vineyards
Idea is that the soil is responsible to provide moisture
Forces vines to struggle and the roots to go deeper, become more resilient
Stages of the vine growing season
1) budbreak (early spring at ~ 50 •)
2) leaves separate (10 days later)
3) flowering (late spring/early summer)
4) flowering effects (10-14 days later)
5) veraison (summer)
- softening grapes that turn red or yellow as they ripen
Millerandage
Different sized berries on the same bunch
Cause of poor weather during flowering
Cordon Trained Vines
Spurs are supported to grow vertically so they end up 1-6 feet above ground
Less risk of frost damage + grapes stay off ground
Advantage in higher yields
Disadvantage uneven ripening (apical dominance - high spurs take more resources)
Head Trained Vines
Trained so all the spurs are above the “head” or trunk, 1-2 feet from ground
Used in south of France (goblet) and Australia (bush)
Need less irrigation
Tons / acre vs. hectoliters / hectare
1 hectoliter = 100 liters = 26.4 gallons = 0.183 tons
1 acre (43,500 sq ft) = 0.405 hectares
2 tons/acre = 27 hectoliters/hectare
Mutage
Process of arresting fermentation of VDN by adding a natural grape spirit to preserve sugar levels
Appassimento
Process of raisinating the grapes by drying them
Can be on vine, in drying rooms or on straw mats
Makes dessert wines