Off-Odors of Wine

These cards will point out the meaning of off-odors in wines. 

14 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
What causes a musty, moldy odor in some wine?
Most commonly it is cause by 2,4,6,- Tricloroanisole otherwise known as TCA. When a cork becomes contaminated with TCA it leaks into the wine causing this odor and is commonly known as cork taint.
Sulfur Dioxide
Sulfur is a preservative that is added to wine. When too much is added it can cause a strong odor that is like smelling burnt matches. To most it is unpleasant.
Hydrogen Sulfide
When a wine sits too long and it is sulfur-rich, it can cause a foul odor of rotten eggs. This is caused by the complete absence of oxygen.
Mercaptan
Smells of garlic or onions and is caused similarly as hydrogen sulfide but is much more severe to the point of no remedy at times.
Bacteria in wine can cause odors such as vinegar, rancid butter, sauerkraut, fingernail polish remover, wet wool or mouse to name a few.
The bacteria related smells are: Acetic Acid - vinegar smell, Butyric Acid - rancid butter smell, Lactic Acid - sauerkraut smell, Ethyl Acetate - fingernail polish remover smell, Mousy - wet wool or mouse
Green is the smell of leaves.
This is caused by the use of immature grapes.
Oxidized is the odor of aldehyde.
Makes the wine smell flat with a lack of fruit character.
Maderized a baked odor.
Result of over heating or oxidization.
Moldy is simply the smell of mold.
This smell is cause by moldy grapes or moldy barrels.
Rubbery is the odor of rubber.
This is found in either very low-acid wines or wines with a great deal of sulfur.
Stagnant is a stale water smell.
Usually caused by stale water.
Stemmy is a bitter smell.
This is the odor of grape stems.
Wet Cardboard is a paper chemical odor.
Casued by filtering material.
Reduction associated with rotten eggs, cabbage, burnt rubber.
This happens when there is a lack of oxygen.