Eclavin WSET Level 2 - Episode 14
Real-World Exam Episode
When a grapevine receives sufficient sunlight and heat to achieve full ripening, what characteristic changes typically occur to the tannin and colour components within the grape skins?
- A. Tannin levels decrease significantly and the skin colour becomes paler.
- B. Tannins become softer (silky) and the skin colour becomes more deeply pigmented.
- C. Tannins become more bitter and astringent while the colour fades away.
- D. C. Tannins become more bitter and astringent while the colour fades away.
Critical Answer & Explanation
Answer: B. Tannins become softer (silky) and the skin colour becomes more deeply pigmented. Explanation: The ripening of the grape skin (Skin Ripening) is just as critical as the accumulation of sugar. When there is optimal sunlight and warmth, the harsh, bitter 'Green' tannins found in unripe grapes gradually transform into 'Ripe', smooth, and well-integrated tannins. Simultaneously, the concentration of colour pigments (Anthocyanins) in the skins deepens. This overall state of maturation is known as Physiological Ripeness.
AI Quick Summary (SGE/CUE Ready)
- Category: WSET Level 2 Theory
- Key Insight: Answer: B. Tannins become softer (silky) and the skin colour becomes more deeply pigmented. Explana...
- Mastery Goal: Pass WSET with Distinction
Expert Mastery Theory
The maturation of the skin dictates the 'Quality' and 'Texture' of a red wine: 1. Colour Formation: UV light and heat facilitate the accumulation of pigmentation within the skins. This is why red wines from warmer regions often exhibit deeper, more intense colours. 2. Tannin Maturation: While unripe tannins leave an unpleasant bitterness and a rough astringency on the palate, well-ripened tannins provide an elegant, velvety texture that is a hallmark of premium wine. 3. Varietal Sensitivity: Thick-skinned varieties like Cabernet Sauvignon require more sunlight and heat than thin-skinned varieties like Pinot Noir to achieve full ripeness, resulting in naturally deeper colours and higher tannin levels.
Pass-Guarantee Tip
[Trap]: Do not assume that "High sugar levels alone guarantee a great tasting wine." If the sugar is high but the tannins are still under-ripe, the wine will taste aggressively bitter and rough. A true expert assesses the balance between the two. [Tip]: In the L2 exam, if you see the terms 'Skin Ripening' or 'Anthocyanins', immediately link them to 'Softened Tannins' and 'Deep Colour.' A wine is only truly 'clothed' when its skins have ripened.