Why does Zinfandel taste like that?

Characteristically medium-full body. Commonly associated with blackberry, raspberry jam, black pepper, cinnamon.

Not claiming: That every wine from this variety shows these characteristics. This is the range across the category, and site and winemaking move wines within and beyond it.

Characteristically medium-plus tannin, medium-plus acidity and medium-full body. Commonly associated with red plum, dried cranberry, liquorice, dried herbs.

Not claiming: That every wine from this variety shows these characteristics. This is the range across the category, and site and winemaking move wines within and beyond it.

Characteristically high tannin, medium-plus acidity and full body. Commonly associated with blueberry, blackberry, black pepper, dark chocolate.

Not claiming: That every wine from this variety shows these characteristics. This is the range across the category, and site and winemaking move wines within and beyond it.

Warmer growing seasons are associated with faster sugar accumulation and lower retained acidity, so fruit reaches a given potential alcohol earlier in the season.

Varies: Above the vine’s photosynthetic optimum the relationship reverses: extreme heat stalls ripening, inhibits anthocyanin synthesis and can raise sugar only through berry dehydration.

Not claiming: That warm regions necessarily make high-alcohol wine. Potential alcohol at any moment is a choice point; the producer decides when to pick.

Proximity to a large body of water moderates temperature extremes, which is associated with a longer, more even ripening period and a lower risk of both spring frost and extreme summer heat.

Varies: Maritime influence also raises humidity, which raises fungal disease pressure. It is not uniformly an advantage.

Not claiming: That a maritime climate is cool. Maritime describes variability, not temperature.

A Mediterranean pattern of wet winters and dry summers is associated with reliable ripening and with mild late-season water stress, which restricts berry size and raises the ratio of skin to juice.

Varies: Where the dry season is severe or lengthening, the same pattern produces damaging rather than beneficial stress, and irrigation becomes necessary rather than optional.

Not claiming: That water stress is beneficial as such. Mild stress helps; severe stress halts ripening.

Fermenting on the skins extracts phenolic compounds, including the tannins that produce astringency. Extraction rises with time, temperature and alcohol level.

Varies: Extraction is not linear. Anthocyanins come out early and quickly; tannins continue throughout and beyond fermentation, and post-fermentation maceration can reduce perceived astringency by polymerising them.

Not claiming: That longer maceration always means more perceived tannin. Extended maceration frequently softens a wine rather than hardening it.

Anthocyanins are extracted from black grape skins during skin contact, which is where red wine colour comes from. Most extraction happens in the first days.

Not claiming: That colour depth indicates quality or body. Nebbiolo is pale and highly tannic; deeply coloured wines can be light-bodied.

Five to ten years for old-vine field-blend bottlings, which have the structure. High-alcohol, jammy Zinfandel is best young, before the fruit dries out and leaves the alcohol exposed.

Not claiming: That a wine of this style will develop these characters. Ageing potential varies by producer, vintage and storage, and most wine is better young.