It was several years ago now that I first noticed this not
always repulsive, but a characteristic in some wines that really got my
attention. Back then the world of wine
was in its relative infancy to where it is today. American consumers were not as adventurous as
they are today in trying new wines. Even
I was at the beginning my career in the industry and stumbling on details of
the industry as I went along.
The first time I noticed it I had to do a double take. I was like smelling a rubber hose or old tires in the nose
of the wine in hand. I also remember it
being a Pinotage, which in itself has unique characteristics, so I wrote the
aroma off as being a characteristic of this particular wine. But then as I continued sampling through the
new portfolio I was representing I ran across another wine, this time a red
from Argentina . “Okay… so it’s not a ‘Pinotage’ thing. What
is it?” I thought to myself, could it
be from something in the production of the wine? The use of rubber hoses?
What?
While it’s not a terribly off putting smell (well it kind of
is), it’s something that when tasting with a buyer, or sharing a bottle with
friends, it’s one of those things you have to put your best fake smile on
for.
So enter marcaptans, an organosulfure compound that blah,
blah, blah. In short… the cause, sulphur. I ran across this aroma in a wine last week,
and it brought me right back to the Pinotage I had over 10 years ago. So the culprit?
Even as farmers today are trying to be as eco-conscious as
possible, there are still processes that can cause this little problem. One cause is the spraying of sulfur on the vineyard
too close to harvest, or simply over spraying.
Spraying reduces the chances of mildew or fungus. Another cause can be a
treatment used on oak barrels used to age wines. Whew… those are a lot easier
to understand. The others, gets a little
more complicated.
While some winemakers use a grapes natural yeasts to ferment
wines, others inoculate their wines with strains of yeasts that testing has
shown cause higher levels of hydrogen sulfide.
Rather than going into more technical information that I normally will
paraphrase as “blah, blah, blah” let’s just say yeast doesn’t like to be
stressed out any more than the rest of us.
Insufficient nitrogen levels, too high of temperature during
fermentation, too low, too fast all cause our little yeast friends to get
frazzled. And when that happens… burnt
rubber.
Like I said, it’s not really an overwhelming aroma, but it’s
still not something I think of when I go to pair a wine with a prepared
dinner. What goes with burnt rubber?










