Wines I'm Making: 2013 Grape Harvest (October 6, 2013)

2013 marks our 10th harvest. We picked the grapes in our little backyard vineyard on Sunday, October 6--both the Sangiovese and the Cabernet grapes. October 6 is a fairly typical date for the Sangiovese (the dates have ranged from around September 29 to October 16 over the years).

It's somewhat early for the Cabernet (October 18 in 2012), but a fair number of clusters were already turning to raisins, probably because I watered less than usual this year (only twice, rather than three of four times in most years) and it seemed best not to wait any longer. We harvested 20.5kg (or 45.1 lbs) of Sangiovese grapes, which became just under eight gallons of must after crushing and de-stemming. The must measured 22 degrees Brix with pH at 3.63, just about right for the light rosé these grapes will become.

We harvested 41kg of Cabernet Sauvignon/Cabernet Franc (or 90.2 lbs), which yielded a little more than 11 gallons of must. The must tested at 27.5 degrees Brix--the highest it's ever been, reflecting the high percentage of raisined grapes. The pH was at 3.56. Because of the high sugar level, I'll probably add a small amount of acidulated water to the must to lower the Brix to around 26 to avoid producing an excessively alcoholic and therefore unbalanced wine. The lesson here is to water the grapes a little more, although I'd been hoping to eventually wean the grapes off water altogether.

The Sangiovese is already pressed and inoculated with Epernay II yeast, as usual. We ended up with about 4.5 gallons of pressed juice. I pitched the yeast on the afternoon of the 7th. The grapes spent about 20 hours on the skins, which will result in a fairly deep pink wine.

The Cabernet must is resting. I usually do a three- to four-day pre-soak, which is supposed to result in more extraction from the skins of softer (water-soluble) tannins than the (alcohol-soluble) tannins extracted during the fermentation process. I don't know, but this method seems to produce a wine we like. Today I'll be adjusting the sugar level, as noted above. Tomorrow or the day after it will be time to add the yeast and get the fermentation started. I love this time of year. The whole house will soon smell of fresh yeast and fermentation--like a winery.

[Update: This afternoon (October 9) I dissolved 15g of tartaric acid crystals in 2.5l of distilled water (using a formula provided by the kind people at The Beverage People) and added the mixture to the Cabernet must. It was difficult to mix it all in evenly, so, measuring the Brix after the addition, it comes out a bit low (at 23 degrees Brix), but I suspect that's simply because of an imperfect mixture. The sweetest juice is probably stuck at the bottom of the container. The aim was to reduce the sugar to 25.5 Brix. I'll stir it up again tomorrow and test it once more.]

Wines I'm Making: 2013 Sangiovese Berry Sample

 It's that time of year. I got out my pH meter and my refractometer today to look at the sugar and pH levels of the Sangiovese grapes in the back yard for the first time this season. I collected a sample of berries from each of the plants in the vineyard and crushed them. First the sugar level: The juice is at 20 Brix. I'm aiming for 22-23 Brix, so another week to ten days, perhaps. The pH is at 3.40, which is a bit higher than I would have expected at this stage. I'll test again in a few days. If the pH seems to be rising steadily without the sugars going up much, I may have to pick at a somewhat lower sugar level than is ideal. We'll see how things progress.

[Update: I took another Sangiovese berry sample today, September 29. The sugar is now at 21 Brix, so up a point from the sample I took ten days ago. The pH is higher, too, but not alarmingly so, at 3.45. pH squared times Brix is 249.9. I'd like to get one more degree of sugar, but can probably pick any time. Rain is in the forecast--which may have a bearing on things, depending on how much we get.

I also checked the Cabernet Sauvignon grapes for the first time today, taking a similar berry sample. The sugar is already at 25 Brix--right where I want it--and the pH is at 3.42, which is a good level) pH squared times Brix is 292), but I suspect the sugar is where it is in large part because the number of raisins on the vines is greater than usual at this time of year. It's normal for some raisins to form before harvest, but I suspect my attempt to dry farm the grapes this year (I've watered them only once or twice the whole summer) may have something to do with it. Normally I water three to four times. Some of the seeds look quite mature, others are still somewhat green. It's beginning to sprinkle just as the sun is starting to go down. If we get a heavy rain tonight (September 29) or a prolonged rain begins to look likely, it may be best to pick very soon.]

Wines I'm Making: 2013 Cabernet at 20 Brix

Yesterday I got out the refractometer for the first time this year--out of curiosity; we are still several weeks from a normal harvest date--but a random berry I tested from one of our Cabernet vines was at 20 brix. I normally aim to harvest at around 24 brix. As generally it takes about a week of good weather to raise the brix level by one degree, that would suggest we're about a month from harvest. As we usually harvest in the first week of October, everything seems to be on track, despite the rather cool summer we've had. Looking at the grapes, I noticed some that were beginning to shrivel a little. I'd watered only once so far this year. Given the cool weather, I was trying to see if we could go entirely without supplemental water this year, but I decided it would be best to water once before harvest. I turned on the irrigation system for five and a half hours.