Reduction in Wine: An Ageing State, Not a Default Flaw

The standard

Controlled reduction keeps oxygen ingress low enough that the resulting sulfur compounds remain within the desired range, rather than tipping into unpleasant notes.

Criteria

• Oxygen ingress is deliberately limited, not accidentally blocked
• The resulting sulfur compounds stay within the desired range, not the faulty one
• The state can be steered through closure and storage
• A return to balance remains possible through aeration

Distinction

Reduction in wine ≠ Reduction Propensity: Predisposition, Not a Verdict: the propensity is established before fermentation, the reduction itself only forms in the finished wine. Controlled reduction ≠ a wine fault: only once the sulfur compounds become dominant and unwanted does the state tip into the fault range.