Brettanomyces.

Brettanomyces.

 

 

UC Davis researchers create Brettanomyces aroma wheel

As much as it’s reviled, Brettanomyces still has its supporters in those who think a little bit of barnyard or wet dog imparts a distinct identity to their wines.

 

The clean, modern winemaking practices of the sort espoused by the University of California, Davis, have put Brett squarely in the menace category. Dr. Linda Bisson, who studies the metabolic pathways of yeast at UC Davis, however, likened Brett to a color in an artist’s palette.

 

Granted, it might be a color similar to a brash, fluorescent green that is best used sparingly, she told Wines & Vines.

 

Bisson and UC Davis Viticulture & Enology Department staff member Lucy Joseph released a Brett aroma wheel around the start of the year. The wheel is the result of a study the two performed on a collection of 83 Brett strains, of which 17 were identified as positive and five as negative by a sensory panel.

 

Aroma Wheel.

Aroma Wheel.

 

 

Strains that garnered a negative reaction were those that generated more aromas in the rotten and putrid category, as opposed to positive characteristics such as floral and spicy. Some strains had no sensory impact even though the Brett population grew in the wine. Certain strains also exhibited a correlation of descriptors such as earthy and putrid or Band-Aid and soy.

 

The positive strains did add something good to the wine rather than just not befouling it, Bisson said. The finding would appear to underscore the essence of the Brett debate between those disgusted by its flaws versus others intrigued by its complexities.

Read on…

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s