Cabernet Sauvignon vs Shiraz: Side by Side (Taste, Food)

Cabernet Sauvignon vs Shiraz comes down to what you feel on your gums. Cabernet grips harder and tastes tarter; Shiraz feels rounder and warmer, and sometimes smells of cracked black pepper. In hot regions the two can smell almost alike, so the tannin and acidity are the surer guide.

Cabernet Sauvignon vs Shiraz, in One Paragraph

Both are dry, full-bodied reds with deep colour, but Cabernet Sauvignon usually has higher acidity (the tartness that makes your mouth water) and firmer, more angular tannin (the drying grip on your gums). Shiraz feels rounder and finer-grained, has slightly lower acidity and can easily pass 15% alcohol. Cabernet smells of blackcurrant, with green pepper in cool sites. Shiraz smells of blackberry and coffee, with black pepper in cool sites. Shiraz and Syrah are the same grape.

Cabernet Sauvignon vs Shiraz Side by Side

Trait	Cabernet Sauvignon	Shiraz / Syrah	Check it in the glass
Tannin	Firm, angular, obvious grain	Rounder, smoother, finer grain	Run your tongue along your upper gums after a sip: rougher means Cabernet
Acidity	On the high side, lively	A bit lower	Count how long your mouth keeps watering: longer means Cabernet
Alcohol	Ripe but rarely the hottest	Easily over 15% in warm regions	Feel for warmth at the back of the throat after you swallow
Cool-climate aroma	Blackcurrant, green pepper	Cracked black pepper, then blackberry	Smell for pepper first; green pepper points to Cabernet, black pepper to Syrah
Warm-climate aroma	Black cherry, olive; jammy when very hot	Jammy blackberry, licorice	Aroma alone will not settle it; go back to tannin
Oak	Strong affinity for oak	Often oaked too	Vanilla and toast can hide the fruit, so judge the structure

Quick check

One question on what you just read

In a hot region, Cabernet and Shiraz can smell almost alike. What tells them apart more surely?

AHow sweet each one tastesBWhich fruit you smellCThe tannin and acidity

Tap an answer to see how you did.

Which Has More Tannin, Cabernet or Shiraz?

Both grapes give plenty of tannin, but Cabernet's feels more angular and grainy, and Shiraz's rounder and finer. Both are thick-skinned, which is also why both wines are so deeply coloured. What separates them is how that tannin feels on the gums.

Cabernet's berries are very small, with a thick skin and a seed-to-pulp ratio of about 1:12. Skins and seeds are where tannin lives, so each drop of Cabernet juice carries a lot of them. Syrah's tannin reads as finer-grained, and in hot climates it softens further as the fruit turns jammy. The grip itself is explained in what tannins are.

Why Does Cabernet Smell of Blackcurrant and Shiraz of Pepper?

Each grape carries its own aroma compounds. Cabernet has high levels of methoxypyrazines (compounds that smell of green bell pepper), and some Syrah carries rotundone, the molecule that also gives black pepper its smell. Both show most clearly where the grapes ripen slowly.

Cabernet changes with the heat. In a cool climate (slow ripening, so tarter, lighter wine) it tastes of blackcurrant and green pepper. In warmer places it moves to black cherry and olive, and in very hot ones it turns jammy. Mint appears in regions warm enough to keep methoxypyrazines low but still fairly cool, and a resinous eucalyptus note turns up where eucalyptus trees grow nearby.

Syrah has no single signature aroma, but blackberry, coffee and pepper are the common ones. In a warm climate (long sunny days, riper fruit and more alcohol) it gives softer tannin, jammier fruit and a licorice note. Some people cannot smell rotundone at all, so a peppery Syrah smells only of fruit to them. Spicy red wines lists the other reds that carry it.

Is Shiraz Sweeter or Stronger Than Cabernet?

Neither is sweet. Both are dry (no sugar you can taste; fruity is not sweet), and the sweet impression in Shiraz comes from very ripe fruit and alcohol. That is a smell and a warmth, not sugar. Cabernet's higher acidity and firmer tannin make it taste drier still.

Shiraz is usually the stronger of the two, easily passing 15% alcohol in warm regions, near the top of the alcohol by wine type range for unfortified reds. High alcohol also fools tasters into reading high acidity. The warmth makes the mouth water for a moment, but that watering dies down quickly, while acid keeps it going. Fruit versus sugar is covered in sweet vs dry wine.

Which Goes Better With Food?

Cabernet goes with fatty, charred red meat; Shiraz goes with smoke, spice rubs and pepper. Fat and protein soften firm tannin, while spice and smoke suit a rounder wine with ripe fruit. If the plate is plain and fatty, open Cabernet; if it is spiced or smoky, open Shiraz.

• Grilled ribeye or lamb chops: Cabernet. The fat cushions its angular tannin. Wine with steak sets out the cut-by-cut picks.
• Spice-rubbed ribs or brisket: Shiraz. Its rounder tannin does not clash with the rub, and ripe blackberry stands up to sweet, smoky glazes. More matches are in wine with BBQ.
• Pepper-crusted steak: a cool-climate Syrah, whose own pepper repeats the crust.
• Tomato pasta or pizza: Cabernet from a cooler site, because acidic tomato makes a lower-acid wine taste flat.
• Chilli heat: a Syrah under 14%, because alcohol makes chilli burn harder.

Which Should You Pick Tonight?

Pick by the texture you want and the word on the label, because grape and place together predict the glass better than either alone. If you want grip and freshness, take Cabernet; if you want warmth and round, ripe fruit, take Shiraz.

• Pick Cabernet Sauvignon if the food is fatty and plain.
• Pick a bottle labelled Syrah if you want pepper and a firmer, cooler style; the word often signals a cooler region.
• Pick a warm-region Shiraz if you want a red to drink on its own; check the label, because 15% feels heavy with a light meal.
• Pick a Cabernet-Shiraz blend if you want both: Cabernet's grip with Shiraz's ripe middle.

Is Shiraz the Same Grape as Syrah?

Yes. Shiraz and Syrah are one grape; Shiraz is the name used mainly in Australia, where it is the most popular red grape. In France it is called Syrah and is the main grape of the northern Rhône. Its parents are two old grapes from southeastern France, Dureza and Mondeuse Blanche.

How far the two labels split in style is laid out in Syrah vs Shiraz, and the Cabernet Sauvignon wine guide maps where Cabernet grows.

Can You Tell Them Apart Blind?

Often, if you judge the structure before the smell. With warmer-climate examples the two converge in aroma, and oak can hide the fruit of both. Tannin texture and acidity stay readable, so the gums and a watering mouth settle most pairs.

Work in this order: pepper first, then tannin on the gums, then how long the mouth waters, then warmth on the finish. Blind tasting tips adds the setup.

The blend is common in Australia, where Cabernet is the second most planted red grape after Shiraz. A wine with both grainy grip and a ripe, round middle may be both grapes in one bottle; the Australian wine guide covers where each grows. The general method is in how to compare two wines.

Every other grape matchup sits in the grape varieties hub. Open one Cabernet and one Shiraz tonight, pour equal amounts, and judge tannin before you smell anything. Then photograph each label in Sommy and taste both glasses through the look, smell and taste steps.

Sources

1. Decanter China (Fongyee Walker): How to distinguish Cabernet Sauvignon and Syrah/Shiraz in blind tasting
2. Wikipedia: Cabernet Sauvignon
3. Wikipedia: Syrah
4. Wikipedia: Methoxypyrazine
5. Wikipedia: Rotundone