If this bottle of 4-year-old wine is any indication, the answer is “not so much.” When tasted at the winery a couple of years ago, this was a really tasty wine. I’ve also had a Merlot from Chester Gap not too long ago that was completely enjoyable.
This wine, on the other hand, did not hold up. Bottled with a composite cork, it tasted ok, if muted, when first opened, but then turned into flowery sugar water after about 10 minutes in the glass.
A shame. Not sure if this is an indication of the grape, the winery, or the seal. Regardless, from now on I’ll try to be better about drinking my viognier young.