Merlot vs. Cabernet Sauvignon: What a Napa Estate That Grows Both Will Tell You
Merlot is softer, rounder and fruitier. Cabernet Sauvignon is firmer, more structured and built to age. That is the short answer.
The longer answer is more interesting. We grow both grapes on the same 33 acres in Napa’s Oak Knoll District, a few rows apart. We bottle each on its own, and we blend them together. This guide covers how they differ, which one suits you, and why we think you should taste them side by side. You can browse every bottle in our wine collection.
Key Takeaways
- Both are dry red wines from the Bordeaux family of grapes.
- Cabernet has thicker skins, so it brings more tannin and grip. Merlot has softer tannins and feels smoother.
- Merlot leans toward plum and black cherry. Cabernet leans toward blackcurrant, cedar and herbs.
- Neither is sweeter. Merlot just tastes fruitier because it is softer.
- Napa winemakers often blend them: Cabernet gives the backbone, Merlot fills in the middle.
What is the difference between Merlot and Cabernet Sauvignon?
The main difference is structure: Cabernet Sauvignon has more tannin and a firmer grip, while Merlot is softer and rounder. Both grapes come from Bordeaux, and both share a parent in Cabernet Franc. But they grow, taste and age differently.
| Merlot | Cabernet Sauvignon | |
|---|---|---|
| Body | Medium to full | Full |
| Tannin | Soft, velvety | Firm, grippy |
| Typical fruit | Plum, black cherry, raspberry | Blackcurrant, blackberry, black cherry |
| Other notes | Chocolate, mocha, bay leaf | Cedar, tobacco, mint, graphite |
| Skins | Thinner | Thicker |
| Ripens | Earlier | Later |
| Drinks well | Young or with a few years | Often better with time in the cellar |
Why the gap? It starts with the skins. Cabernet’s small, thick-skinned berries hold more tannin and color. Merlot’s larger, thinner-skinned berries make a plusher wine that is easier to drink young.
Timing matters too. Merlot ripens earlier in the season. Cabernet needs a long, steady stretch of sun to soften. That is part of why both do well in a place with a long season, like ours. Wine Folly has a good visual breakdown of the two if you want to go deeper.
Which is smoother, Merlot or Cabernet Sauvignon?
Merlot is smoother. Its softer tannins leave less of that drying, gripping feel on your gums and tongue. If you are newer to red wine, or you find big reds harsh, Merlot is the easier place to start.
Cabernet is not rough, though. Its tannins give it shape, and they soften with food and with age. A well-made Cabernet feels firm, not harsh.
Is Merlot sweeter than Cabernet?
No, Merlot is not sweeter. Both are dry wines, with almost all of their sugar turned to alcohol. Merlot only tastes sweeter because its fruit is riper and rounder, and its tannins do not dry your mouth the way Cabernet’s do.
Which one tastes better?
It depends on what you like:
- Pick Merlot if you like plush, fruit-forward reds you can enjoy now.
- Pick Cabernet if you like structure, savory notes and a wine that changes in the glass.
- Pick a blend if you want both at once.
Merlot has had a bad reputation for twenty years, mostly thanks to a single movie line. A lot of that comes from cheap, flabby versions. Grown somewhere cool, Merlot keeps its freshness. One guest summed it up in a review of our estate: they typically hated Merlot, and it ended up their favorite wine of the day.
How does Oak Knoll change Merlot and Cabernet?
Oak Knoll’s cool climate gives both grapes more freshness and softer edges than they show further up the valley. Cool air from San Pablo Bay flows over our vineyard most afternoons. Only Los Carneros, right on the bay, is cooler in Napa Valley.
For Merlot, that is a big deal. Merlot can turn flat and jammy in heat. Here it keeps its acidity and its bright fruit. Merlot is also the most planted grape in the district, with about 1,100 acres in a 2014 count reported by The Drinks Business.
For Cabernet, the cool season means a long, slow ripening. The tannins get time to soften on the vine. You still get Cabernet’s structure, with more floral and herbal lift than a hot-site Cabernet.
We have farmed both side by side since 2000. Every grape in our wines comes from our own estate, so what you taste is this one piece of ground. [Link to the Oak Knoll District guide once it is live.]
Why do Napa winemakers blend Merlot and Cabernet?
Winemakers blend them because each covers the other’s gaps. Cabernet brings structure, color and aging power. Merlot fills in the middle with soft, round fruit. Together they make a wine that is complete young and still has room to grow.
This is the Bordeaux tradition, and Napa took it on early. Even our single-variety wines get a little help. Our Merlot carries a touch of Cabernet Sauvignon and Cabernet Franc. Our Cabernet carries a touch of Merlot to round out the finish.
Here is how our lineup moves from one grape to the other:
| Wine | What leads | Why try it |
|---|---|---|
| Merlot | Merlot | The purest look at Oak Knoll Merlot |
| Romance | Merlot, with Cabernet Franc and Cabernet Sauvignon | Merlot’s softness with more depth |
| Seduction | Cabernet Sauvignon, Merlot and Cabernet Franc | Our signature blend, the two grapes in balance |
| Cabernet Sauvignon | Cabernet Sauvignon | Structure and length, rounded by Merlot |
| Reserve Merlot and Reserve Cabernet Sauvignon | The best barrels of each | Small lots for the cellar |
The names are not random. Bart named our wines as chapters of a love story for Barb, from Fascination to Passion. Each bottle carries one of his poems on the back.
Our wines have earned a dozen 94 to 98 point reviews from Robert Parker Jr. Read more in O’Brien Estate and Robert Parker scores, or shop the bottles in our wine collection.
What food goes with Merlot and Cabernet Sauvignon?
Cabernet goes best with rich, fatty red meat, while Merlot works with a wider range of dishes, from roast chicken to pork to mushrooms. The rule is simple: Cabernet’s tannins need fat and protein to soften against. Merlot’s softer tannins are more flexible.
| Dish | Better with | Why |
|---|---|---|
| Ribeye or grilled steak | Cabernet Sauvignon | Fat softens the tannin |
| Braised short ribs or lamb | Cabernet Sauvignon | Matches the weight |
| Roast chicken or turkey | Merlot | Firm tannin would overpower it |
| Pork tenderloin | Merlot | Soft fruit suits lean meat |
| Mushroom risotto | Merlot | Earthy notes meet in the middle |
| Aged cheddar or gouda | Either | Both work; Cabernet wins with harder cheese |
| Burgers | Either, or a blend | A blend covers both sides |
Do not pair Cabernet with spicy food. Heat makes tannin and alcohol feel harsher.
How do you taste Merlot and Cabernet side by side?
The best way to learn the difference is to pour both at once, with the same food, in the same setting. Reading a chart helps. Tasting is what makes it stick.
Step 1: Start with the Merlot. Notice the fruit, then how soft the finish feels.
Step 2: Move to the Cabernet. Feel where the tannin grips: the gums, the sides of the tongue.
Step 3: Go back to the Merlot. After the Cabernet, it will seem even rounder.
Step 4: Finish with a blend. Now you can pick out what each grape adds.
That is close to how a tasting runs at our estate. You sit at your own table by the vines that grew the wine. Your host pours estate Merlot, Cabernet and our blends, then gives you room to talk. No crowds, no strangers, no clock.
Not sure which style of tasting suits you? Our guide to choosing a Napa winery compares the formats. Planning the rest of the trip? Start with things to do in Napa Valley.
Planning a visit? Reserve a tasting at O'Brien Estate →
Taste both where they grow
See for yourself which side you are on. Reserve your private tasting at O’Brien Estate.
Frequently Asked Questions
Is Merlot or Cabernet better for beginners?
Merlot is usually better for beginners. Its soft tannins and ripe fruit make it easier to enjoy without food.
Is Merlot a dry wine?
Yes, Merlot is a dry wine. It can taste fruity, but almost all of its sugar is fermented into alcohol.
Does Merlot or Cabernet have more alcohol?
Neither is reliably higher. Alcohol depends on how ripe the grapes get, so a warm-climate Merlot can be stronger than a cool-climate Cabernet.
Which ages longer, Merlot or Cabernet?
Cabernet Sauvignon usually ages longer. Its higher tannin protects the wine over time. Good Merlot can still age well for a decade or more.
Are Merlot and Cabernet related?
Yes. Both grapes share Cabernet Franc as a parent, which makes them half-siblings. All three are classic Bordeaux grapes, and we grow all three on our estate.
Can I buy O’Brien Estate wine in stores?
No. Our wines are sold at the estate and to our members, not in stores. Visit for a tasting or browse our wine collection.