Puzzling taste change

[Thomas]

No, that is not my thesis.

First, "improved" taste is relative, and without having tasted the wine I could not make that determination.

But I do know that as soon as you open a bottle of wine you introduce oxygen; as you remove some of the wine from the bottle, you introduce more oxygen. As the wine lay a day interacting with all that oxygen, harsh flavors tend to soften, that is what aging wine is all about.

As for the sweetness, that is a particular trait of Fetzer's Gewurztraminer, generally.

As for the sarcasm, not intended as such, but when you write "was opened at dinner...two glasses were enjoyed...the remainder was left..." you do not identify by whom, so how can anyone know?.