Consumption & Service + Composition and Chemistry Flashcards
Sweet wine serving temperature
43-47 F
Dry Sherry serving temp
43-47 F
Sparkling wine serving temp
43-50 F
Light white/rosé serving temp
45-50 F
Med-Full, dry whites serving temp
50-55 F
Light Red serving temp
50-55 F
Tawny port and sweet Sherry serving temp
54-61 F
Med bodied red serving temp
55 F
Full bodied and aged red serving temp
59-64 F
Vintage port serving temp
64-68 F
Glassware placement?
Right of water glass, above knife
Acidity in food __________ the perceived sweetness & Body of a wine
Decreases
Sweetness in food _______ sweetness, body & fruitiness of the wine
Increases
Sweetness in food _______ perceived acidity in the wine
Increases
Bitterness in food _______ bitterness in the wine
Increases
Umami in food _____ perceived bitterness of a wine
Increases
Umami in food ______ perceived sweetness, fruitiness and body of a wine
Decreases
What acid gives a slightly bitter salty flavor?
succinic
Acid found in most vinegar
Acetic
Of the 6 acids found in wine, which are found in unfermented grapes?
Tartaric, Malic, Succinic, Citric
Total Acidity measures?
Total volume of all acids present in wine
PH measures?
How intense the acidity represents itself
PH wine typical range?
2.9-3.9
2 main fermentable sugars in grapes
Glucose & Fructose
Yellow pigments found in white wine?
Flavonols
One of most common esters in wine?
Ethyl Acetate
What compound gives a nutty character to Sherries?
Acetaldehyde
Result of acid and alcohol joining?
ester
Oxidized alcohols formed when wine is exposed to air?
Aldehyde
Largest group of odiferous compounds in wine?
Esters
TCA detected by most @
2-7 parts per trillion
TCA caused by?
Mold on bark of cork tree which interacts with other compounds to generate 2,4, 6 Trichloroanisole
What percent of bottles estimated to have TCA
1-8%
Name 3 faults from sulfur compounds?
SO2 (Sulfur Dioxide)
H2S (Hydrogen Sulfide)
Mercaptan
Sulfur Dioxide scent?
Acrid, burnt matches and burning sensation in throat (higher acid in wine means more pronounced SO2)
Hydrogen Sulfide Scent and reason?
Rotten Eggs
Malnutrition of yeast starved of oxygen
Mercaptan is combo of?
Smells like?
Sulfur and ethanol
Garlic/Onions
Name 5 faults from Bacteria
- Acetic acid
- Butyric Acid
- Lactic Acid
- Ethyl acetate
- Geranium Fault
What two types of bacteria can survive in wine?
lactic
acetobacter
Acetic acid scent?
Cause?
Vinegar (Volatile Acidity)
acetobacter attacks compounds in alcohol, changing it to vinegar
Ascensence?
VA + EA
Butyric acid smell?
Caused by?
Rancid milk/spoiled cheese
Bacteria
Lactic acid smell when it is a fault?
sauerkraut or goat
Ethyl Acetate smell?
Cause
Low levels= fruity flowery
Fault= Fingernail polish or model glue
Name 5 Phenolic Compounds
1.Anthocyanin
2. Flavonols
3. Tannins
4. Vanillin
5. Resveratrol
Name 4 “Other Components” of wine
- Aldehydes (oxidized alcohol)
- Ester
- Dissolved gases
- Sulfites
2 functions in Sulfur as a preservative
Antibacterial
Antioxidant
What 5 major components in wine?
1.Water
2. Alcohol
3. Sugar
4. Acid
5. Phenolic Compounds
Acid usually makes up between _____% & _____% of a wine’s volume
.5%-.75%
Geranium Fault smell?
Caused by?
Crushed geranium leaves
lactic acid metabolizes a sorbic acid
Rubbery odor caused by?
Very low acid wines or excess sulfur