Winemaking with Merlot and Bordeaux Blends
Merlot is often overshadowed by its more famous Bordeaux companion, Cabernet Sauvignon, but it's one of the most beloved red wine grapes in the world. Known for soft, plummy wines with velvety texture and early drinkability, Merlot is both approachable for beginners and capable of producing world-class wines.
In this guide, we'll explore how to make the most of Merlot and discuss the art of Bordeaux-style blending.
Understanding Merlot
Merlot offers distinct characteristics:
- Soft tannins: Rounder, smoother than Cabernet
- Rich fruit: Plums, black cherries, raspberries
- Early accessibility: Can be enjoyed younger than Cabernet
- Versatility: Great alone or in blends
Merlot ripens earlier than Cabernet Sauvignon and is easier to grow, making it an excellent choice for home winemakers.
Harvest Considerations
Timing
Merlot ripens 1-2 weeks before Cabernet. Harvest at:
- 21-24° Brix
- pH 3.5-3.7
- When flavor development is optimal
Warning
Don't wait too long—Merlot can become overripe quickly, losing acidity and developing jammy, pruny flavors.
Fermentation Process
Crushing and Maceration
Merlot responds to moderate extraction:
- Crush gently—avoid breaking seeds
- Standard maceration: 7-14 days
- Less aggressive punch-downs than Cabernet
Temperature
Ferment at:
- 75-82°F (24-28°C)
- Slightly cooler than Cabernet to preserve fruit
Yeast Selection
Choose fruit-forward strains:
- RC-212: Enhances fruit
- DV10: Reliable
- 71B: Good for fruity wines
Post-Fermentation
Pressing
Press when fermentation completes:
- Standard: 7-10 days maceration
- Extended: 14-21 days for more structure
- Don't over-extract—Merlot tannins become bitter
Malolactic Fermentation
Almost always beneficial:
- Allows MLF to complete
- Adds roundness and smoothness
- Typical: 2-4 weeks
Aging
Merlot benefits from oak but doesn't need it as much as Cabernet:
- Unoaked: Fruit-forward, early drinking
- Light oak: 3-6 months
- Traditional: 12-18 months
French or American oak both work well.
Understanding Bordeaux Blending
The magic of Bordeaux lies in blending. While regulations specify which grapes can be used, winemakers blend for balance:
Primary Bordeaux Varieties
- Cabernet Sauvignon: Structure, tannins, aging
- Merlot: Fruit, softness, early drinkability
- Cabernet Franc: Aroma, complexity
- Malbec: Color, fruit
- Petit Verdot: Color, tannins, late-ripening
Blending Principles
Create balance:
- Tannins + fruit = balance
- eidity + body = structure
- Aroma + flavor = complexity
Common approaches:
- Cabernet-dominant (classic Left Bank)
- Merlot-dominant (classic Right Bank)
- Equal blend (traditional)
Blend after aging. Age each variety separately, then blend to taste. This gives you more control than blending before fermentation.
Conclusion
Merlot is the friendly face of red wine—approachable, delicious, and forgiving. It's an excellent grape for home winemakers, whether you make it alone or use it in blends.
Explore more varieties: Winemaking with Pinot Noir