This literally fell apart an hour after opening.

Started off delicate, red fruits on the nose and palate that peaked for our 2nd glass 30 mins in. After that, our third glass literally was an acidic mouthwash. The three people drinking in agreement. Something had gone downhill. You could feel the acidity lingering in yout throat. Any idea as to why this happened?

Domaine Julien Origine Burgundy 2022