By: Denise M. Gardner
Wine blending is often highlighted as the artistic portion of wine production. However, blending can also be used for practical or economical purposes. This blog post will explore some of the common introductory reasons for using wine blending to craft red wines.
Why do winemakers blend wines?
Wine blending is a wine production technique that can be used for a multitude of purposes in order to finish a wine. Some of these reasons include, but are not limited to:
- Creating a house style
- Improving vintage consistency
- Highlighting vineyard terroir
- Enhancing a wine’s positive sensory characteristics
- Minimizing a wine’s undesirable sensory components
- Balancing oak flavors
- Altering a wine’s chemistry
- Managing wine inventory
- Blending out (i.e., getting rid) of problem wines
- Additional reasons…
House style and vintage consistency can be very important for a brand’s marketability and reliability amongst consumers.
Many Champagne producers rely on blending to create a house style cuvee associated with their sparkling wines. While these are not red wines, creating a house style is often based on specific sensory or taste characteristics that are desirable by the winemaker and contribute to major blending decisions. These blending decisions help minimize vintage-to-vintage variation and variation in grower supplies of fruit while enhancing consistency for their brand.
The same concept can be applied to red wines, but with the use of red wine grape varieties. House blends can be represented with blending names such as “Proprietor’s Red” or “Winery’s Name House Blend.” Having wines that are labeled as a blend provides flexibility for the winemaker to create a wine that is of a similar style on a year-to-year basis while altering the wine grape varieties that go into the blend every year.
The other advantage of creating house blends is that these wines allow winemakers to work with variations in varietal inventory. If we take the last example above, Cupcake Vineyard’s Red Velvet wine, while three different varieties make up the blend, the percentages of each variety contributing to the blend can vary from year-to-year. This may help mediate changes in yield each harvest season.
Improving Annual Wine Consistency or Highlighting Vintage Variation
Blending can a winemaker’s best tool in enhancing vintage consistency, especially in cooler growing regions where vintage-to-vintage variation is prevalent. There are a couple of ways that winemakers have been able to accomplish this practice.
- Reserving previous vintage wines for blending into future vintages.
- Purchasing bulk grapes/juice/wine from warmer climatic regions and blending in small amounts to each vintage.
While neither of these practices may be ideal for terroir expression of certain wine blends, these blending practices provide opportunities to expand a winery’s product portfolio and enhance wine style variation associated with the brand.
In contrast, blending can be used as a tool to illustrate and celebrate vintage variation, which is an inherent component of winemaking. Not only do these wines offer unique educational and marketing opportunities, this is a tactic that can be used to differentiate premium products within a brand and cater to those consumers that are wine enthusiasts or have a greater interest in vintage-to-vintage variations for a particular brand. This practice can also better capture the brand’s terroir, which can be a key marketing feature for wineries with estate vineyards. Additionally, these wines offer exceptional tasting experiences for consumers that enjoy vertical tastings of multiple vintage years, and can be used for various sale promotions over several years.
A common example of this practice is demonstrated by Allegro Winery & Vineyards in Brogue, PA. The Cadenza and Bridge wines are designed as premium brands, vintage dated, and blended to a particular style in those years that produce the best quality red wine blends.
Wine blending to fix problem wines
While less artistic and perhaps a bit less creative, blending can also be used to help minimize the impact of problem wines or wines that have noticeable defects, flaws or quality shortcomings. Minor problems can often be partially masked by being blended into aromatically rich varieties like Concord, Niagara, or Catawba. Noiret, a red hybrid variety, also has a relatively rich aroma/flavor of black pepper which may be an alternative aromatically rich blending variety, as well as the utilization of formula wines with strong added flavors.
Wines suffering from minor oxidation problems can often be added to richer, fresher, younger wines at minimal levels without hindering the fresher or younger red wine. Additionally, wines with a slightly elevated VA (~0.50 – 0.70 g/L acetic acid) can be added to wines with a lower VA (<0.40 g/L) after the high VA wines have been properly treated and stabilized to avoid contaminating a clean wine.
Allegro Winery’s winemaker, Carl Helrich, worked with Penn State Extension Enologist, Denise Gardner, to improve some of the Penn State-produced problem wines with use of wine blending.
The key thing to remember when blending clean-wines with problem-wines is that winemakers want to avoid creating a series of lower quality wines in order to get rid of a problem wine. Keep in mind that it is not likely that one will be able to create a “unique blend” by using problem wines to any degree. Winemakers are more likely to create a “good enough” or “commercially acceptable” wine when utilizing blending for this purpose.
All wines that have issues should be analytically and sensorially evaluated before and after blending to ensure chemical and microbiological stability.