Acidification, Fining & Filtration

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sangwitch

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The following post is an excerpt from the 1999 edition of “Parker’s Wine Buyer’s Guide”. I cut the text from a larger excerpt entitled “The Dark Side of Wine”. If anyone is interested in reading the entire 11-page document send me a PM and I’ll email it to you. (For those who don’t know who he is, Robert M. Parker is considered the world’s leading wine critic.)
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Destroying the Joy of Wine by Excessive Acidification, Overzealous Fining, and Abrasive Filtration.

Since the beginning of my career as a professional wine critic, I have tried to present a strong case against the excessive manipulation of wine. One look at the world's greatest producers and their wines will irrefutably reveal that the following characteristics are shared by all of them -- whether they be California, France, Italy, Spain, or Germany. 1) They are driven to preserve the integrity of the vineyard's character, the varietal's identity, and the vintage's personality. 2) They believe in low crop yields. 3) Weather permitting, they harvest only physiologically mature (versus analytically ripe) fruit. 4) Their winemaking and cellar techniques are simplistic in the sense that they are minimal interventionists, preferring to permit the wine to make itself. 5) While they are not opposed to fining or filtration if the wine is unstable or unclear, if the wine is made from healthy, ripe grapes, is stable and clear, they will absolutely refuse to strip it by excessive fining and filtration at bottling.


Producers who care only about making wine as fast as possible and collecting their accounts receivable quickly also have many things in common. While they turn out neutral, vapid, mediocre wines, they are also believers in huge crop yields, with considerable fertilization to promote massive crops, as large as the vineyard can render (6 or more tons per acre, compared to modest yields of 3 tons per acre). Their philosophy is that the vineyard is a manufacturing plant and cost efficiency dictates that production be maximized. They rush their wine into bottle as quickly as possible in order to get paid. They believe in processing wine, such as centrifuging it initially, then practicing multiple fining and filtration procedures, particularly a denuding sterile filtration. This guarantees that the wine is lifeless but stable, a goal where the ability to withstand temperature extremes and stand upright on a grocery store's shelf is given priority over giving the consumer a beverage of pleasure. These wineries harvest earlier than anybody else because they are unwilling to take any risk, delegating all questions regarding wine to their oenologists, who, they know, have as their objectives security and stability, which is at conflict with the consumer's goal of finding joy in wine.


The effect of excessive manipulation of wine, particularly overly aggressive fining and filtration, is dramatic. It destroys a wine's bouquet as well as its ability to express its terroir and varietal character. It also mutes the vintage's character. Fining and filtration can be lightly done, causing only minor damage, but most wines produced in the New World (California, Australia, and South America in particular), and most bulk wines produced in Europe are sterile-filtered. This procedure requires numerous pre-filtrations to get the wines clean enough to pass through a micropore membrane filter. This system of wine stability and clarification strips, eviscerates, and denudes a wine of much of its character.


Some wines can suffer such abuse with less damage. Thick, tannic, concentrated, Syrah- and Cabernet Sauvignon-based wines may even survive these wine lobotomies, diminished in aromatic and flavor dimension but still alive. Wines such as Pinot Noir and Chardonnay are destroyed in the process.


Thanks to a new generation of producers, particularly in France, aided by a number of specialist importers from America, there has been a movement against unnecessary fining and filtration. One only has to look at the extraordinary success enjoyed by such American importers as Kermit Lynch and Robert Kacher to realize how much consumer demand exists for producers to bottle a natural, unfiltered, uncompromised wine that is a faithful representation of its vineyard and vintage. Most serious wine consumers do not mind not being able to drink the last half ounce of wine because of sediment. They know this sediment means they are getting a flavorful, authentic, unprocessed wine that is much more representative than one that has been stripped at bottling.


I am certain there would have been an even more powerful movement to bottle wines naturally with minimal clarification if the world's wine press had examined the effect of excessive fining and filtration. I find it difficult to criticize many American wine writers since the vast majority of them are part-timers. Few have either the time or resources to taste the same wines before and after bottling. Yet I remain disappointed that many of our most influential writers and publications have remained strangely silent, particularly in view of the profound negative impact filtration can have on the quality of fine wine. The English wine writing corps, which includes many veteran, full-time wine writers, has an appalling record on this issue, especially in view of the fact that many of them make it a practice to taste before and after bottling. For those who care about the quality of wine and the preservation of the character of the vineyard, vintage, and varietal, the reluctance of so many writers to criticize the wine industry undermines the entire notion of wine appreciation.


Even a wine writer of the stature of Hugh Johnson comes out strongly on the side of processed, neutral wines that can be safely shipped 12 months of the year. Readers may want to consider Johnson's and his coauthor, James Halliday's, comments in their book, The Vintner's Art -- How Great Wines Are Made. Halliday is an Australian wine writer and winery owner and Hugh Johnson may be this century's most widely read wine author. In their book they chastise the American importer Kermit Lynch for his "romantic ideals" which they describe as "increasingly impractical." Johnson and Halliday assert that "The truth is that a good fifty percent of those artisan burgundies and Rhones are bacterial time bombs." Their plea for compromised and standardized wines is supported by the following observation: "The hard reality is that many restaurants and many consumers simply will not accept sediment." This may have been partially true in America 20 years ago, but today, the consumer not only wants but demands a natural wine. Moreover, the wine consumer understands that sediment in a bottle of fine wine is a healthy sign. The fact that both writers argue that modern-day winemaking and commercial necessity require that wines be shipped 12 months a year and be durable enough to withstand months on retailers' shelves in both cold and hot temperature conditions is highly debatable. America now has increasing numbers of responsible merchants, importers, and restaurant sommeliers who go to great lengths to guarantee the client a healthy bottle of wine that has not been abused. Astonishingly, Johnson and Halliday conclude that consumers cannot tell the difference as to whether a wine has been filtered or not! In summarizing their position, they state, "...but leave the wine for 1, 2, or 3 months (one cannot tell how long the recovery process will take), and it is usually impossible to tell the filtered from the nonfiltered wine, provided the filtration at bottling was skillfully carried out." After 14 years of conducting such tastings, I find this statement not only unbelievable but also insupportable! Am I to conclude that all of the wonderful wines I have tasted from cask that were subsequently damaged by vigorous fining and filtration were bottled by incompetent people who did not know how to filter? Am I to think that the results of the extensive comparative tastings (usually blind) that I have done of the same wine, filtered versus unfiltered, were bogus? Are the enormous aromatic, flavor, textural, and qualitative differences that are the result of vigorous clarification techniques figments of my imagination? Astoundingly, the wine industry's reluctance to accept responsibility for preserving all that the best vineyards and vintages can achieve is excused rather than condemned.


If excessive fining and filtration are not bad enough, consider the overzealous addition of citric and tartaric acids employed by Australia and California oenologists to perk up their wines. You know the feeling -- you open a bottle of Australia or California Chardonnay and not only is there no bouquet (because it was sterile filtered) but tasting the wine is like biting into a fresh lemon or lime. It is not enjoyable. What you are experiencing is the result of the misguided philosophy among New World winemakers to add too much acidity as a cheap but fatal life insurance policy for their wines. Because they are unwilling to reduce their yields, because they are unwilling to assume any risk, and because they see winemaking as nothing more than a processing technique, acidity is generously added. It does serve as an antibacterial, antioxidant agent, thus helping to keep the wine fresh. But those who acidify the most are usually those who harvest appallingly high crop yields. Thus, there is little flavor to protect! After 6-12 months of bottle age, what little fruit is present fades, and the consumer is left with a skeleton of sharp, shrill acid levels, alcohol, wood (if utilized), and no fruit -- an utterly reprehensible way of making wine.


I do not object to the use of these techniques for bulk and jug wines, which the consumer is buying for value, or because of brand name recognition. But for any producer to sell a wine as a handcrafted, artisan product at $20 or more a bottle, the adherence to such philosophies as excessive acidification, fining, and filtration is shameful. Anyone who tells you that excessive acidification, fining, and filtration does not damage a wine is either a fool or a liar.
 

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