Wine Faults Flashcards
What is the term for wine that has a moldy, musty, ‘dank’ aroma?
Corked
What is the name of the mold that causes the moldy, musty, dank aroma?
2,4,6-Trichloranisole (aka TCA)
What are three off-odors associated with sulfuric compounds in wine?
Sulfur dioxide, hydrogen sulfide, mercaptan
What characteristics of scent are associated with sulfur dioxide?
Burnt match
Is a less acidic wine MORE or LESS likely to have pronounced sulfur dioxide elements than a more acidic wine?
Less likely
What characteristics of scent are associated with hydrogen sulfide?
Rotten eggs
What can cause hydrogen sulfide to occur in a wine?
Long term exposure to low oxygen environment?
Are screw-cap (stelvin) wines MORE or LESS likely to enouncter hydrogen sulfide?
More likely (less oxygen enters the bottle)
What is the off-odor-causing, sulfuric compound byproduct associated with garlic / onions?
Mercaptan
What two types of bacteria can survive in something as acidic as wine?
Lactic bacteria and acetobacter
Which type of bacteria can cause malolactic fermentatio - intentional or otherwise?
Lactic bacteria
Which type of bacteria can convert alcohol into acetic acid?
Acetobacter
Which bacterial odor can cause a wine to smell like vinegar?
Acetic acid
Which bacterial odor can cause a wine to smell like rancid butter or spoiled cheese?
Butyric acid
Which bacterial odor can cause a wine to smell like saeurkraut or a goat?
Lactic acid
Which bacterial odor can cause a wine to smell like fingernail polish remover or model airplane glue?
Ethyl acetate
What is the term for an off odor byproduct caused by yeast, that can be described as “sweaty” or “horsy”?
Brettanomyces
What is a term used to describe an off odor that is sometimes the result of using underripe grapes?
Green
What is the term for when oxygen is dissolved into wine, often resulting in a characteristic nutty, caramelized character?
Oxidization
What is it called when a wine has been overheated, resulting in a baked or cooked odor? (This is acceptable in some specific wines)
Maderized
This provides “oxidized” aromas to Sherry
Acetaldehydes
Two possible causes of geranium fault
Incomplete MLF, improper breakdown of sorbic acid
What does MLF stand for?
Malolactic fermentation
What are conditions that lack oxygen?
Reductive/reduction
