The 1990 Cornas is outstanding. The color is an opaque black/purple, and the nose offers up rich, ripe aromas of black fruits, licorice, and spices. Super-concentrated, with a full-bodied, highly extracted, mouthfilling taste, this example of Cornas possesses moderate tannins, adequate acidity, and a smashingly long finish. It is also relatively refined for a Cornas, displaying no signs of the rustic tannins or funky, earthy smells many Cornas can possess. Although it can be drunk now, I would recommend waiting at least 3-4 years. Enjoy it over the next 12-15 years.
Source: Robert Parker (Robert Parker Wine Advocate) by Robert M. Parker, Jr. December, 1992