Back to Vins'ics #4 : Les Tanins du Vin, c'est quoi ? [RéUpload]

Main ideas and lessons

• Goal of the episode: Answer the “ultra-basic” question—what are tannins?—especially for beginners who struggle to understand them.

What tannins are (core concept)

• Tannins are phenolic chemical compounds found in wine.
• They are responsible for the mouthfeel sensation of:
  • dryness
  • lack of lubrication
• When wines taste harsh or rough, tannins are a major contributor to that astringent effect.

How tannins differ across wines (practical comparison)

• Example 1: A red wine from Médoc (Cabernet Sauvignon), typically very tannic.
• Example 2: A red Burgundy (Pinot Noir), typically light with few tannins.

The viewer should be able to taste a clear difference between these styles in terms of tannin intensity.

How to recognize tannins (taste exercise)

• If someone still doesn’t understand, the host suggests drinking green tea steeped for almost two hours to experience a similar rough/astringent sensation to tannins.

Tannins are not inherently negative

• Tannins can be perceived as:
  • round
  • velvety
  • harmonious
• This is especially true when tannins are well-managed.

Winemaking importance (balancing act)

• During vinification (wine-making), the producer must:
  • extract enough tannins to give red wine structure and balance
• But they must avoid over-extraction, which can lead to:
  • bitterness
  • harshness that dominates the wine

Where tannins come from (inputs + process)

• Tannins are present in:
  • grape stems
  • grape skins
  • grape seeds
• In red wine vinification, maceration (soaking/extraction of grape solids) can extract these compounds—so red wines mainly end up with a tannic structure.

Not all grapes produce the same amount of tannin

• Some grape varieties naturally generate more tannin than others.

Aging can add tannic structure

• Even if grape tannin levels differ, oak barrel aging can add additional tannic structure because wood contains tannins.

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Instructions / methodology (as presented)

Tasting comparison method

1. Taste a red Médoc (Cabernet Sauvignon; high tannins).
2. Then taste a red Burgundy (Pinot Noir; few tannins).
3. Note the difference in mouthfeel/astringency.

Recognition method using green tea

• Steep green tea for almost two hours.
• Drink it to experience the rough/astringent sensation attributed to tannins.

Winemaking “balancing act” (conceptual method)

• Extract tannins during vinification enough for balance/structure.
• Avoid extracting too much, which causes bitterness and harshness.

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Speakers / sources featured

• Speaker/Host: The narrator/host of “Back to Vins’ics” (the person speaking in the subtitles; “Simon” is referenced in connection with a question, but the speaker is the host).
• Referenced source (not a person featured): Twitter (the host mentions asking a question via Twitter).