Episode 98: Prosecco - Tank Method Bubbles, Confusing Sweetness Levels, and Italy's Most Unpronounceable Wine Region

Host: Joanne Close
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Episode Description

Recording from the chaos of Mardi Gras in New Orleans (sirens, bands, and floats included), Joanne breaks down why Prosecco deserved its own episode. This Italian sparkling wine produces nearly 500 million bottles annually - dwarfing both Champagne and Cava - and uses the tank method to create those fresh, fruity bubbles you know and love.

You'll discover why the grape was renamed from Prosecco to Glera in 2009, how to navigate the confusing sweetness levels where "dry" is actually sweeter than "extra dry", and what makes Conegliano Valdobbiadene so special (besides being impossible to pronounce). Joanne also introduces Col Fondo, the funky natural wine style with sediment at the bottom that Italians apparently use to make risotto.

What You'll Learn in This Episode

Prosecco Production & Tank Method Basics

• Why Prosecco dominates sparkling wine production with 486 million bottles annually
• The tank method (Charmat method) explained: how it differs from traditional method Champagne
• Tank method process: second fermentation in pressurized tanks, not bottles
• Why the tank method is faster, cheaper, and preserves fresh fruit flavors
• Tank method benefits: no lees aging means vibrant green apple, pear, and melon flavors
• Who really invented the tank method: Italian Federico Martinotti vs. Frenchman Eugène Charmat

Understanding Prosecco's Geography & Quality Levels

• The 2009 DOC creation and strategic grape renaming from Prosecco to Glera
• Prosecco DOC covers 34,000 hectares with high yields: 18 tons per hectare vs. Champagne's 10-11
• Conegliano Valdobbiadene DOCG: the premium zone so hard to pronounce it's a sobriety test
• Rive designations: 43 named crus on steep limestone slopes (50-500m elevation)
• Superiore di Asti and other top vineyard areas within the DOCG

Prosecco Grapes & Styles

• Glera: the primary Prosecco grape (formerly called Prosecco)
• Permitted additions: up to 15% Chardonnay, Pinot Bianco, or Pinot Grigio for body and alcohol
• Rosé Prosecco (legal since 2020) with up to 15% Pinot Noir
• Col Fondo "sui lieviti" style: pétillant naturel method with sediment in bottle

The Confusing Prosecco Sweetness Levels

• Brut: the driest Prosecco style
• Extra Dry: 12-17 g/L residual sugar (the most common style - not actually dry!)
• Dry: 17-32 g/L residual sugar (confusingly sweeter than "Extra Dry")
• Why Prosecco sweetness levels can range from dry to medium-sweet

Prosecco Tasting Profile & Best Practices

• Tank method flavor profile: medium acidity, green apple, pear, melon
• What you won't find: no bread, toast, or pastry flavors (no lees aging)
• Why Prosecco is made for immediate enjoyment, not aging
• Global Prosecco consumption: UK and US lead, followed by Germany and France

Episode Highlights & Quotes

"The name of this wine region may take the cake, win the prize for the most difficult to pronounce wine region in all of wine history... Cat, who owns the lovely Berg Wines, says that if she knows she can't pronounce this, it's time to get someone else to drive her home. So let's try it: Conegliano Valdobbiadene."

"As we get sweeter, the terms don't sound like it. Starting with brut, then we have extra dry, which is actually sweeter than brut... then even sweeter on that scale, we have dry - see, it doesn't make any sense."

"I read somewhere that they use the fondo to make risotto and I love that. I'm gonna just go with that."

Prosecco Quick Reference Guide

Tank Method vs. Traditional Method

• Tank method: second fermentation in pressurized tanks
• Traditional method: second fermentation in individual bottles
• Tank method result: fresh, fruity, aromatic sparkling wines
• Traditional method result: complex, yeasty, bread-like flavors from lees aging

Prosecco Production Stats

• 486 million bottles annually (2019 figures)
• 34,000 hectares in DOC
• 80% exported worldwide
• Yields: 18 tons/hectare (vs. Champagne's 10-11)

Prosecco Quality Hierarchy

1. DOC Prosecco (largest area, tank method)
2. Conegliano Valdobbiadene DOCG (premium hills, 50-500m elevation)
3. Superiore di Asti/Rive designations (top vineyard sites, steep slopes)

Prosecco Sweetness Scale (driest to sweetest)

• Brut (driest)
• Extra Dry (12-17 g/L) - most common
• Dry (17-32 g/L) - actually sweeter!

Resources Mentioned

• Conegliano Valdobbiadene DOCG
• Berg Wines (New Orleans wine shop)
• Col Fondo sui lieviti style (pétillant naturel)
• Glera grape (formerly Prosecco grape)

Coming Up Next Week

Episode 99: Other Important Sparkling Wines

Joanne wraps up the sparkling wine series with Sekt, Asti, and important New World sparkling wines - finishing off that Level 3 chapter on sparkling.

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About Wine Educate

Wine Educate is a WSET Approved Programme Provider offering internationally recognized wine certification courses. Through the podcast, Joanne Close makes wine education accessible to everyone, breaking down complex topics into practical, easy-to-understand lessons. Whether you're studying for your WSET certification or simply want to learn more about wine, you'll find the guidance and knowledge you need to enjoy wine with confidence.

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Episode 98 of the Wine Educate Podcast | Hosted by Joanne Close | © 2025 Wine Educate