Fall is always always either one of two things for a Winemaker:
- A fantastically dry, long period of time that gives grapes time to mature their varietal character.
- Just another four-letter word that begins with the letter “F”!
Last week Fall was just another four-letter F word. This week I’m starting to regain my confidence in Fall. In fact, we’re going to start taking grape samples this weekend and look at next week for a possible harvest window!
This is the time of year that we sit and watch every type of weather report we can find, looking for the perfect time to pick. Being a small, family-owned business that uses all of our estate fruit for our own wines is a huge advantage in the end product. We can let the fruit “hang” out until the last possible moment to get the full maturity of the grape before we make our wines. Larger operations have to stage their harvests so that they have enough time to process everything before the fruit begins to rot. That makes it difficult to provide a consistently high quality product, and gives the smaller operations a distinct advantage.
Right now, the weather (knock on wood) looks fantastic for the next several days. With the rain that we had last week there is still a lot of water in our fruit. We go out and taste the berries every day to figure out when we start getting sugar back in them. Let me back up a second and explain what we’re waiting for.
Scientifically, there are three growth stages after bloom for the Vitis Vinifera (Common Grape Vine). The first stage and the last stage are where we see the most physical change in the grapes. After Veraison (color change), the fruit is around 12 or 13 Brix (percent) sugar. As we go through the end of summer and into Fall, that percentage increases, and we take random cluster tests waiting for the fruit to get around 23-24 Brix.
Last week, we received a pretty fair amount of rainfall from Mother Nature. In fact, there’s still some on the ground today. As the grapes soak up that water, our ability to accurately track the sugars becomes difficult. We get “set back”, in the sense that we cannot bring the fruit in to process it and make wine until it completely dries out. Now, the sugars in the grapes are still developing during this period, it’s just difficult to tell how much.
The last day of rain we had was Tuesday, October 11th. What we need now is a full five days of dry weather to take another sample and see where the sugars in the grapes have advanced to. So, at this point it looks like we’ll go out and collect samples again on Sunday, October 16th. Based on the results of those tests, and the weather forecast at that time, we’ll probably start to plan a schedule for bringing our fruit in and beginning the harvest.
In a cold year like this one, acid is almost more important that sugar.
By testing the pH of our grape juice samples, we can check to see how mature the fruit has become. Pinot Noir and Pinot Gris juice that have a pH of between 3.2 and 3.4 are signal that there’s a good level of maturity in the fruit. You can’t really see maturity in a sugar sample. There are a couple of other ways you can check for maturity in your grapes:
- Check for dark brown color in the seeds of the grapes
- Check for a dark brown stem near the top of the grape cluster (See Photos Above)
That’s it for now. we’ll try and get you some new photos over the weekend and an explanation of how we take grape samples.











