Theory 119/Wine ageing/Threshold lens
Reduction Needs an Oxygen Floor
The claim
Reductive aromas appear below a threshold in oxygen ingress, so a very tight closure can damage a wine it protects.
01Mechanism
Sulphides accumulate when oxidation cannot remove them; the threshold marks the minimum ingress needed.
02Prediction
Reduction should track ingress below a floor.
03Refutation
Reduction tracking closure quality would remove the floor.