Zero-Zero
Zero sulfur added, zero dosage — the most uncompromising commitment in natural champagne
What It Means
"Zero-zero" has no legal definition — it is shorthand used by producers and sommeliers to describe wines that combine two commitments: no added sulfur dioxide at any point in production (zero SO₂) and no dosage after disgorgement (zero sugar). The result is champagne in its most unmediated form.
The Challenge
Each commitment is demanding on its own. Together, they require: - Pristine, fully ripe fruit with no disease (rot introduces spoilage organisms that SO₂ would otherwise suppress) - Exceptional cellar hygiene throughout - Fermentation that completes cleanly without the safety net of added sulfur - Base wines with sufficient acidity and ripeness to stand without the sweetness of dosage - Reliable cold chain management after bottling
The Argument
The counterintuitive truth about champagne is that it can tolerate zero-zero production better than most still wines. The dissolved CO₂ acts as a natural preservative. The high acidity provides a hostile environment for spoilage organisms. The pressure seal is near-hermetic.
Romain Henin produces all his champagnes zero-zero. The results — vivid, precise, expressive — make the argument more convincingly than any description.