Cabernet Sauvignon for WSET: what to expect when you study it
Cabernet Sauvignon is the world's most-planted red grape and one of the most testable at WSET. This is an orientation; the regional drill belongs in your course materials and our app.
What WSET asks you to know
At Level 2, recognition: late-ripening, thick-skinned, high tannin, central to Bordeaux blends, widely planted in California, Chile, Australia.
At Level 3, you're expected to articulate why Cabernet dominates Bordeaux's Left Bank, why climate modulates the green-pepper signal, and why it's almost always blended.
The framework
Three things carry most of the marks:
- Late-ripening, thick-skinned, small-berried. That biology gives the colour, tannin, and ageing potential. It also means Cabernet needs warm sites and a long season; cool years and cool sites under-ripen.
- Methoxypyrazines. The green pepper / capsicum / asparagus character. Inherited from the Sauvignon Blanc parent. Cool climates preserve them; warm climates suppress them.
- A blend grape by tradition. Bordeaux blends with Merlot for fruit and roundness, Cabernet Franc for perfume, Petit Verdot for colour and structure. New World Cabernet often blends similarly even when labelled as a single varietal.
Where it shows up
Three poles to know:
- Bordeaux Left Bank (Médoc, Pessac-Léognan). Gravel soils, blended with Merlot and Cab Franc. The reference.
- Napa Valley. Warm days, cool nights from San Pablo Bay influence. Often more concentrated, more overt oak.
- Coonawarra and Margaret River. Australia's Cabernet poles. Coonawarra terra rossa gives elegance; Margaret River maritime climate gives a Bordeaux-leaning profile.
Also worth placing: Maipo (Chile), Stellenbosch (South Africa), and Cabernet's role in Super Tuscan blends in Bolgheri.
How it shows up in tasting
A blind Cabernet typically reads: medium to deep ruby (often opaque core), medium-plus to high acid, firm to high tannin, full body, with blackcurrant and cedar as the spine. Climate modulates: cool gives capsicum / mint / leaf; moderate gives blackcurrant / blackberry / cedar / pencil shavings; warm gives ripe cassis / mint / eucalyptus.
What to do next
Pair with Bordeaux for WSET for the Left Bank story, Merlot for WSET for the blend logic, and Napa and Sonoma for WSET for the New World contrast.
FAQ
Why is Cabernet dominant on Bordeaux's Left Bank? Gravel soils warm quickly and drain well, suiting a late-ripening grape.
What is the green-pepper note? Methoxypyrazines, inherited from the Sauvignon Blanc parent.
Why is Cabernet usually blended? Tannic and slow to ripen — Merlot adds fruit, Cabernet Franc adds perfume, Petit Verdot adds structure.
Can Cabernet stand alone? Yes. Many New World wines are 100% Cabernet; Bordeaux convention is always to blend.
How long does it age? Premium examples can age 20–40 years.