Mt. Eden is unquestionably one of the finest producers of Chardonnay in California. The 1991 and 1990 Estate Chardonnays share bouquets of toasty new oak, earthy, buttery fruit, and minerals. They are tightly knit, rich, full-bodied, concentrated wines that are dead ringers for a top premier cru or grand cru white burgundy. Although I did not have the opportunity to taste them side by side, my recollection is that the 1991 Chardonnay offers additional layers of flavor and longer finish than the exquisite 1990. Based on past efforts, these wines should last for 4-8 years.