This has been a really challenging year for grapes in Northeast Pennsylvania. Wine grapes don't like a lot of rain. Harvest time is supposed to be exciting, but we are having a hard time mustering enthusiasm since so much has gone wrong this year. It all started in May, with the bud-destroying late frost. It pretty much decimated the Cabernet Franc for the year. We probably don't have enough grapes to make even one bottle.
The white Traminette pictured above haven't fared as badly. They actually look pretty professional this year. We are just wondering if they will actually ripen by harvest time since the frost delayed their growth by a good one to two weeks, which is a lifetime for a grape.
How can you tell if a grape is truly ripe? I'm glad you asked, because it gives me a chance to talk about one of the coolest pieces of equipment used in wine making: the refractometer. Basically, the refractometer measures the amount of sugar in your grape juice by detecting the degree to which light is refracted when passing through the juice. Hence the name. Who invents this stuff?
We have a hand-held refractometer that measures something called Brix, which is the measure of how much sugar is in your grape juice. Distilled water has a Brix of 1.00. Ripe Traminette should have a Brix of about 23. And that is precisely what we are worried about this year. Will we achieve Brix 23 before the first frost. Stay tuned!