The primary guest orders "a big red" with the ribeye, and his wife asks for "something lighter" with her duck. One wine list, two people, one table. If you can hold the shapes of Cabernet Sauvignon, Merlot and Pinot Noir clearly in your head, you can solve that table in under a minute.
Cabernet Sauvignon
Thick-skinned, small-berried, late-ripening — and every one of those facts shows in the glass. Small berries mean a high skin-to-juice ratio, which means high tannin and deep colour.
- Flavour: blackcurrant (cassis), black cherry, cedar, mint or eucalyptus; green bell pepper if under-ripe.
- Structure: high tannin, medium to high acid, full body. Almost always oaked, which adds vanilla and cedar.
- Ages exceptionally well; tannins soften over years.
- Regions: Bordeaux (Left Bank — Médoc, Pauillac — where it leads the blend), Napa Valley, Coonawarra, Chile, Tuscany.
Because it ripens late, it needs sufficient warmth; in cool years or cool sites it can be aggressively herbaceous.
Merlot
Cabernet's classic blending partner — and its softer counterpart. Earlier ripening, thinner skinned, larger berried.
- Flavour: plum, black cherry, chocolate; sometimes cooked/stewed fruit when very ripe.
- Structure: medium, softer tannin, medium acid, medium to full body, often high alcohol in warm sites.
- Regions: Bordeaux (Right Bank — Saint-Émilion, Pomerol — where it leads), California, Chile, Italy.
In the classic Bordeaux blend, Cabernet Sauvignon brings structure, tannin and longevity; Merlot brings flesh, fruit and approachability. That is why they are blended: each covers the other's weakness.
Pinot Noir
Thin-skinned, early-ripening, difficult — famously so. It demands a cool to moderate climate and is prone to disease and rot.
- Flavour: red fruit — raspberry, strawberry, red cherry — with earthy, mushroom, forest-floor notes as it ages.
- Structure: low to medium tannin, high acid, light to medium body, pale in colour.
- Regions: Burgundy (the benchmark — Côte de Nuits), Champagne (as a base wine), Central Otago, Oregon, Sonoma Coast, Germany (as Spätburgunder).
Pinot Noir is the red that behaves, in service terms, a little like a white: it is light, high in acid, and benefits from a light chill.
The Shapes Side by Side
| Grape | Tannin | Acid | Body | Colour | Core flavour |
|---|---|---|---|---|---|
| Cabernet Sauvignon | High | Med–high | Full | Deep | Blackcurrant, cedar |
| Merlot | Medium | Medium | Med–full | Deep | Plum, chocolate |
| Pinot Noir | Low–med | High | Light–med | Pale | Red cherry, earth |
Onboard Notes
- Pale colour in Pinot Noir is normal and is not a sign of weakness or age. Guests who have not met it before sometimes send it back.
- A young Cabernet with high tannin genuinely benefits from decanting an hour ahead. Ask the chef when the beef is going down and plan backwards.
- Serve Pinot Noir at about 13°C, not room temperature. Warm Pinot loses its perfume and tastes flabby.