Wine Education

Travelling the Cote d’Or

Friday, July 23rd, 2010

Our recent voyage to France took us through the Cote d’Or or “golden slope” of Burgundy as it’s known and then on to Northern and Southern Rhone.  Traveling in our little Citron stick shift auto from the Cote de Nuits to the Cote de Beaune evoked a sense of deep of history of the region, the monks of over a millennium ago laying the foundation for today’s industry and an awe for the sacred terroir and the hard working vintners that produce Burgundies against which all others are compared.

The Cote d'Or is divided into two separate and very different wine producing regions: the Cote de Nuits in the north and the Cote de Beaune in the south.  The Cote de Nuits, unequivocally, produces the finest red Burgundies on the planet.  No sooner do you depart Dijon than you magically enter an agricultural wonderland with a history of winemaking that spans over a millennium.  If there’s anything that distinguishes this region from all others, it has to be its terroir, specifically, the soil, a mix of limestone and marl that sets the stage for the finest Pinot Noir in the world.  For sake of ease, let’s define “terroir” as all those physical and environmental elements that impact the vines, the grapes and the wines.  This includes the soil, its exposure to sun, its elevation and slope, the water table, and of course, the climate.   What you may not appreciate is the series of slopes, geologic faults and rifts that determine the structure and depth of soil components that derive from the Jurassic and Triassic period.  For example, the Saone fault zone represents a distinct break between two very different geologic profiles.  On the upslope is the weathered Jurassic limestone and marl, those soils that nourish the Pinot Noir grape.  On the down slope, in the valley, the soils are more clay and sand.  As the water table in the valley is rather high, the vine’s roots are easily saturated and can yield reds are that are less powerful and concentrated compared to their brethren.  It’s this geology that often answers the question: “how can one vineyard’s wines display one expression while another only a short distance removed offers another?” In addition, elemental nutrients and efficient cation exchange play a key in the structure of the wines, with phosphorus thought to have a profound influence upon the taste of the wine.

Another key component of “terroir” is the climate.  Burgundy lies at the latitude of the US-Canadian border so sunlight becomes very valuable as the season wears on.  The climate is a blend of and sometimes a battle between maritime and continental.  The result is a climate that, on average, it not too warm nor too cold but there are seasons when the winter can be long and cold and the summer hot and humid.  This 2010 growing season started off with a very cloudy, rainy and cool spring followed by intense heat with temperatures in the 90’s and high humidity recently.  Annual rainfall runs around 28 inches, just enough for grapevines.  Fortunately, the fractures in the bedrock associated with faults, helps to conserve water.   In years of drought, vineyard managers must make adjustments as irrigation is not allowed.  On the other side, an overly rainy spring can interfere with adequate flowering and fertilization, resulting in tiny and uneven sized grapes (coulure).  Such occurrences can result in a poor harvest and little wine.  As well, a very wet harvest can swell the grapes and dilute the juices.  Hail is always a monumental risk in the region, especially during the first half of the summer.  One violent storm can strip the canopy of leaves and damage or destroy grapes and vines reducing the valued crop.   While Burgundy sports over 500 appellations and a complex maze of vineyard ownership (some vineyards have 50-100 individual owners, each having a claim to select rows or even sections of rows, all the result of an ancient system), the hallowed wines derive from only one of two grapes, the Pinot Noir and the Chardonnay (the dominant grape of the Cotes de Beaune).  With such diversity of soil geology and vineyard ownership, it’s not at all surprising that there is no one style of Burgundy wine.  Most producers destem in order to avoid the risk of bitterness and the juice maintains initial contact with the skins from between eight and ten days.

Sustainable, Organic and Biodynamic Farming: Fact and Fiction

Friday, May 28th, 2010

As a professional, my beliefs are predicated upon science.  Most of my prior careers were based upon math, physics and medicine…...You can’t get much more scientific than that!  I don’t exclude non-scientific hypothesis and concepts.  I just don’t give them nearly as much weight.

Being so heavily invested in science, I thought that it would be instructive to dig into the concept of Organic, Biodynamic and Sustainable Viticulture, practices that evoke strong emotions on both the science and non-science side.   Organic Viticulture:

Sangiovese: Tasting the Essence of Tuscany

Monday, April 12th, 2010

If you have ever tasted a top Brunello di Montalcino or Chianti Classico or riserva, then you have tasted the essence of what Sangiovese can be, a long aging red wine of amazing finesse with aromas and flavors of deep plum and cherry fruits, floral and perfumy scents, vanilla, earthiness, fine spice and velvety tannins.  While Tuscany is considered to be ground zero for Sangiovese, it’s also grown in South American, California, Australia and South Africa.

The name Sangiovese is derived from the Latin word “sanguis Jovis,” or “blood of Jove.”  While the first mention of the grape is still in some dispute, there is some documentation of its reference in 1590, referred to, it’s believed, as “Sangiogheto.”  It has been established, through DNA testing, that the red grape is spontaneous cross between the grapes Ciliegiolo and Calabrese Montenuovo.

The Renaissance of South Africa Wines

Wednesday, March 24th, 2010

When it comes to wine, chances are that South Africa does not come to mind.  What most do not appreciate, however, is that the country has been producing wine since the 1659 and serving the spirit to European nobility since the 18th century.  While the economic sanctions imposed by apartheid suppressed the industry, it was the political reform of the system and the advent of democracy that once again opened the door to progress.  With the end of apartheid came a surge in financial and intellectual capital that spilled over to the wine industry.  This allowed for rapid development of plant materials, search for new winegrowing geography, improved winemaking techniques and new applied technologies. 

Today, the modern South Africa wine industry is only in its infancy, just 15 years of age.  Despite its youth, it has made astounding progress, receiving deserved attention and winning awards from several international events.  As of this writing, the country boasts over 600 wine producers, double the number year 2000.  Wine exports surged over 300% between 1995 and 2007 placing the country in the overall ninth in international wine production.  Nearly 4000 farmers cultivate almost 102,000 hectares of land. 

Wine Chemistry in a Bottle: The Role of Oxygen

Monday, February 22nd, 2010

I’ve been reading The Billionaire’s Vinegar recently, the story about wine unearthed allegedly owned by our third President, Thomas Jefferson.  While I’m only half way through, this “mystery” revolves around the discovery and authenticity of wine bottles with the inscription “Th J” and the intense bidding wars for these prizes unleashed at auction.  You can read my review on the book by clicking here.   What caught my eye was a discussion about the roll that oxygen plays in the maturation or spoiling of wine, in this case, a wine allegedly two hundred year old.  It caused me to pause, reminding me that basic chemistry is so vital to the quality of the end product that we enjoy.

Oxygen was discovered by Joseph Priestly in 1774 when upon burning Mercury Oxide, noted that an odorless gas allowed a candle flame to burn far longer than anticipated.  In 1775, Priestly placed a mouse in a closed jar with oxygen and to his astonishment, it survived 30 minutes and was revived without incident.  Oxygen is the third most abundant element in the universe after hydrogen and helium and constitutes just short of 21% of our atmosphere.  There are two forms of the element that make life possible for all of us.  One is diatomic oxygen (two atoms combined to form O2) and the other O3 or Ozone, a layer high up in the atmosphere that protects us down here from the hazards of ultra violet radiation.  Ironically, Ozone is a pollutant at the surface and can be a component of smog. 

Wines of Portugal: Not Just Port and Madeira Anymore

Tuesday, January 12th, 2010

While Portugal has hung its hat on the signature fortified wines, Port and Madeira, the country has awoken the rest of the wine world to its tremendous potential in quality red table wine and mostly through native grapes.

Portugal shares its border with Spain on the west and a small stretch to the north while the eastern side joins the Atlantic.  The country spans only 380 miles north to south and, on average, about 100 miles east west.  The terrain ranges from mountainous north of Porto in the northwest portion of the country to rolling open plains in the south central Alentejo to flat on the Atlantic west coastal plain.  The Douro River cutting westward from Spain (where it is known as the Duero), carves out deep canyons rimmed by steep and rugged vineyard terraces.  Much of the region is still somewhat remote with small winding roads.  Soils in the hearty Douro region are rocky with an abundance of schist.  Climate, overall, is maritime with warm summers and cool, wet winters.  However, move a bit inland, and temperatures can soar to over 100 degrees for long stretches during the summer.  Rainfall ranges from around 80 inches in the mountains to less than 500mm in some inland regions.

German Gems: The Mosel, Rheingau, Pfalz and Nahe

Thursday, December 10th, 2009

The Mosel

Formerly known as the Mosel-Saar-Ruwer until 2007, this region is renown for its acidic driven, racy Rieslings.  Grown on steep slaty slopes, these wines express a unique sense of vibrancy and energy yet perfectly balanced with fruit and sugar.  Despite the acidity, the grape somehow maintains its sense of elegance and lightness. 

Deciphering German Riesling

Tuesday, December 1st, 2009

I’ve said it before, I think that German Rieslings are the most food friendly white wine out there!  Their blend of fruit, acidity and range of sweetness lends them a personality that works with so many food categories.  In addition, most are age worthy with some demonstrating the potential to go out 20 years. 

Despite the versatility of these wines, many are intimidated by the bottle label language and categorization of the wines.  Imagine the confusion if Chardonnay or Cabernet Sauvignon were each segmented into many different categories depending upon level of sweetness or tannins!  That being said, there are some basics that should help you sort out some of the confusion and make it easier to interpret the label language or label speak.

Arizona Wine: The History and The Future

Monday, November 2nd, 2009

There is probably no better way to learn about a wine and its “terroir” than speaking with the vintner and cellar manager (often one in the same in small vineyards) and tasting their wines.  For the first time, you will have that unique opportunity, with many of the state’s vintners all brought together under one roof to showcase their bounty.

On November 22nd, the Arizona Wine Growers Association (www.arizonawine.org), is hosting its first ever Wine Growers Festival (www.azwinefestivalatthefarm.com) at the Farm at South Mountain in Phoenix.  This is a unique opportunity to meet many of the vintners face to face and learn about wine making techniques from the vineyard to the fermentation tanks to the barrel and bottle.  Educational seminars focusing upon wine tasting and wine:cuisine pairing and special walk-through exhibits will be offered and of course hundreds of local wines will be available for tasting.

Grapes to Wine: The Process of Fermentation

Monday, October 19th, 2009

Quick, who discovered the process of fermentation?  I’ll share the answer at the end of this article.  Suffice it to say, the concept has been known for just over two hundred and fifty years.

Let’s go back to first year college or perhaps even high school chemistry as fermentation is, in essence, just a chemical reaction.  Fermentation is the process of converting sugar (from grapes) to ethanol (ethyl alcohol) through the metabolism of yeast.  The process is anaerobic (oxygen free) and generates heat in the form of carbon dioxide (CO2).  In fact, sugar that has been infused with yeast, looks like it’s boiling as it releases carbon dioxide. The true chemical equation is:

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