Wine Blend Spotlight: Mettler Ranch GSM
A beautiful blend of three Rhone varietals: Grenache, Syrah, Mourvedre. All three of these varietals trace back to the Mediterranean coast and thrive in the Lodi climate. They blend poetically together, each bringing a different flavor profile. Grenache adds a fresh raspberry flavor. The Syrah brings savory dark fruit flavors and a velvety mouth-feel. Mourvedre adds a nice tannin structure and herbaceous aromas. A delicious wine to try!
You can ferment it a number of ways. You can do what is called a “field blend” and blend everything at crush. Or you ferment each varietal seperately. Either way makes a great wine. It all comes down to the equipment you have and the amount of time you have. If you don’t have a lot of storage vessels then doing a field blend is the way to go.
Field Blend Fermentation:
- Crushing and Fermenting: After harvesting, co-ferment the grapes together in the same fermentation vessel. This means that the Grenache, Syrah, and Mourvèdre grapes are all mixed together from the start. The co-fermentation process allows for the blending of flavors and characteristics at the earliest stage.
- Temperature Control: Control the fermentation temperature carefully, as each grape variety may have different requirements. Find a temperature that works well for all three varieties to ensure proper extraction of flavors and tannins.
- Taste and Adjust: Monitor the fermentation process and taste the wine to assess the development of flavors. Make any necessary adjustments, such as adding yeast or adjusting the temperature, to achieve the desired characteristics.
- Aging: After fermentation, age the wine in suitable containers, such as oak barrels or stainless steel tanks. Aging allows the flavors to meld and develop complexity.
- Bottling: Once the wine has aged to your satisfaction, bottle it. Label the bottles with the vintage and the type of field blend GSM.
- Enjoy: Once the wine has aged to your satisfaction, bottle it. Label the bottles with the vintage and the type of field blend GSM.
Creating a field blend GSM wine is a unique approach that requires careful planning and execution in the vineyard. It can result in a wine with distinctive characteristics that reflect the terroir and the synergy of the three grape varieties grown together.
Fermenting the Grapes Seperately:
- Fermentation: Fermenting each grape variety separately helps control the extraction and balance of flavors. Add yeast to start the fermentation process. Pro Tip: Use different yeasts for each batch and you will create even more complexity!
- Temperature: Monitor and control the fermentation temperature. Grenache, for example, generally benefits from higher fermentation temperatures, while Syrah and Mourvèdre might require lower temperatures to preserve their desired characteristics.
- Taste and Analyze: Taste the wines from each varietal to understand their individual characteristics. Analyze factors such as aroma, flavor, acidity, tannin, and alcohol content.
- Blending Trials: Once each wine has completed fermentation and has been aged to your liking, start experimenting with different blends. This is where the art of blending comes into play. Start with small trial blends and make adjustments to the ratios until you achieve the desired flavor profile and balance.
- Age the Blend: Blend the wines together and allow the blend to age in a suitable container, such as oak barrels or stainless steel tanks. The aging process helps the different components integrate and develop complex flavors. *For more information on againg your wines, check out this blog post
- Regular Tasting: Blend the wines together and allow the blend to age. The aging process helps the different components integrate and develop complex flavors.
- Bottle: Once you’re satisfied with the blend and the wine has aged to your liking, bottle it. Make sure to label the bottles appropriately, indicating the vintage and the blend.
- Enjoy: Allow the bottled wine to rest for a period before opening and enjoying. GSM blends often benefit from some additional bottle aging to reach their full potential.
GSM blends are known for their bold, rich, and complex flavor profiles, often characterized by red fruit, spice, and earthy notes. The proportions of each grape variety in the blend can vary, but Grenache is typically the dominant grape, with Syrah adding structure and Mourvèdre contributing depth and complexity. Experiment with different proportions to create your own unique GSM wine blend.
The Mettler Ranch wine grapes are available for purchase every Fall Season. If you are interested in the Mettler grapes we suggest making a pre-order by mid-August. For more information on the Mettler Ranch click here.
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The Winemaker’s Think Tank: Vol 36 – “If I want to make a blend, do I mix the grapes together when I crush, or ferment them separately and blend later?”
What’s the Winemaker’s Think Tank?
Every Thursday we will post about a few frequently asked questions that our winemaker has answered. If you have a winemaking question you would like to have answered, please email us at support@juicegrape.com and we will try to get into next week’s post. Cheers! 🙂
If I want to make a blend, do I mix the grapes together when I crush, or ferment them separately and blend later?
There are many approaches to creating a blended wine and the chosen path is directly influenced by the desired end result. Blending at crush is often referred to as a field blend. The winemaker may choose to blend at crush when 80% of the blend is one grape. Using cabernet sauvignon as an example, a winemaker may add in a crate or two of Petite Syrah or Petite Verdot to enhance the dark color of the Cabernet Sauvignon. The winemaker may choose to add a crate or two of Cabernet Franc to enhance the spiciness and perceived acidity of the wine. Adding a small amount of a different grape to the larger percentage of the dominant grape in a blend will change the wine subtly, enhancing an aspect of the original grape that may be lacking such as color or acidity.
If the winemaker would prefer to have greater and much more finite control over the flavors in the resulting blend, fermenting each varietal individually would be more advantageous. Different yeast strains may be used on different varietals to enhance specific varietal characters. After a period of separate bulk aging, the wine maker can make different sample blends to determine the final blend of the wines they desire. Perhaps the entire quantity of a varietal will not be needed for the blend or perhaps only small additions of one varietal to another will be necessary to create a balanced final product. The winemaker can create more than one blend with a few separately vinified wines as changing the varietal percentages can greatly affect the final product.
We hope this information helps with your winemaking. If you have any follow up questions or winemaking questions in general, please email us at support@juicegrape.com.
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