Comparison
Merlot vs Shiraz
Two soft, approachable reds — which is bigger, and which is smoother?
The short answer
The main differences: Shiraz has more tannin; Shiraz has more alcohol; Shiraz has more body.
Worth knowing
Both get recommended as easy reds and they are easy in different ways. Merlot is soft because its tannin is low and its texture plush. Shiraz is easy because its fruit is ripe and generous, but it is considerably fuller and stronger, and a Barossa example will out-muscle almost any Merlot.
Where they genuinely differ
Only differences large enough to notice in the glass are listed here. A gap of half a point on a five-point scale is noise, and WineHQ does not dress it up as a finding.
Tannin
Clear differencePhenolic compounds from grape skins, seeds, stems and oak. The principal structural axis of red wine.
Shiraz is more tannic and structured: medium-plus against medium.
Alcohol
Clear differencePerceived alcoholic strength, which tracks actual ABV but is modified by sweetness, acidity and body.
Shiraz is stronger and warmer: high against medium-plus.
Body
Clear differenceThe overall weight and viscosity of the wine in the mouth — a composite of alcohol, sugar, extract and glycerol.
Shiraz is fuller and richer: high against medium-plus.
Fruit intensity
Clear differenceHow loudly the fruit flavours speak, independent of whether they are ripe or tart.
Shiraz is fruitier: high against medium-plus.
Oak influence
Clear differencePerceptible impact of barrel or alternative oak contact — vanilla, toast, coconut, smoke, cedar and added texture.
Shiraz is more oaky: medium-plus against medium.
Herbal / green character
Clear differenceHerbs, grass, blackcurrant leaf, capsicum and other green notes, largely driven by methoxypyrazines and picking decisions.
Merlot is more herbal and green: low-medium against low.
Where they are much the same
Just as useful: knowing which parts of the choice do not matter.
- Sweetness: Similar — both low.
- Acidity: Similar — both medium.
- Aromatic intensity: Similar — both medium.
- Savoury character: Similar — both medium.
- Floral character: Similar — both low.
Full side by side
| Dimension | Merlot | Shiraz |
|---|---|---|
| Tannin | typically medium, ranging from low-medium to medium-plus (3/5) | typically medium-plus, ranging from medium to medium-plus (4/5) |
| Alcohol | typically medium-plus, ranging from medium to medium-plus (4/5) | typically high, ranging from medium-plus to high (5/5) |
| Body | typically medium-plus, ranging from medium to high (4/5) | typically high, ranging from medium-plus to high (5/5) |
| Fruit intensity | typically medium-plus, ranging from medium to medium-plus (4/5) | typically high, ranging from medium-plus to high (5/5) |
| Oak influence | typically medium, ranging from low to medium-plus (3/5) | typically medium-plus, ranging from medium to high (4/5) |
| Herbal / green character | typically low-medium, ranging from low to medium (2/5) | low (1/5) |
| Spice | typically low-medium, ranging from low to medium (2/5) | typically medium, ranging from low-medium to medium-plus (3/5) |
| Sweetness | low (1/5) | low (1/5) |
| Acidity | typically medium, ranging from low-medium to medium (3/5) | typically medium, ranging from low-medium to medium (3/5) |
| Aromatic intensity | medium (3/5) | medium (3/5) |
| Savoury character | typically medium, ranging from low-medium to medium (3/5) | typically medium, ranging from low-medium to medium (3/5) |
| Floral character | low (1/5) | low (1/5) |
| Earthy character | low (1/5) | low (1/5) |
| Perceived freshness | typically medium, ranging from low-medium to medium (3/5) | typically medium, ranging from low-medium to medium (3/5) |
| Carbonation | low (1/5) | low (1/5) |
| Texture | typically medium-plus, ranging from medium to medium-plus (4/5) | typically medium-plus, ranging from medium to high (4/5) |
| Serve at | 15–17°C | 16–18°C |
| Typical flavours | plum, black cherry, chocolate, cedar, fruitcake | blackberry, plum, dark chocolate, licorice, vanilla |
Values are typical points within each wine’s range. Both wines vary — see the individual pages for how much.
Read more
Grape
Merlot
A plush, plum-scented Bordeaux variety that ripens earlier than Cabernet Sauvignon and produces softer, rounder wine.
Grape
Shiraz
The Australian name for Syrah, used to signal the riper, fuller, sweeter-fruited style the country made famous.
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