Compost and Nebbiolo

Upon first glance this pile looks pretty much like any old pile of dirt. Hardly thrilling stuff, really.



But if we look closer, and take a sniff, we see that this pile is very dark in color and smells almost sweet. Compost is awesome stuff, teaming with microbial life. Full of organic matter building fungi and bacteria this stuff really rocks in the vineyard. We compost grape skins, seed, stems and mix in some Camel manure, from Camel Hill Vineyard obviously, and let the pile ferment. We monitor the temperature and moisture content, turning the pile and covering it to control these factors.

We are almost finished applying the compost to our vineyards, we applied most to a block of Merlot at Gist Ranch. By adding compost we are addressing nutritional problems, not just their symptoms. We are actively building life and structure into our soil that will benefit the long-term nutritional needs of our vines.



We did add some to our Nebbiolo at the winery, above you can see the small vines and the compost added around the vine.



I've named the 0.25 acre Nebbiolo vineyard, Domenicato. I read that it means forgotten in Italian and that was kind of how I found this vineyard when I arrived here in 2004. Slowly but surely we are replanting dead vines, addressing training issue and now adding some much needed nutrients, in the form of compost, to these struggling vines. The slope the vineyard lies on is quite steep with really thin rocky soil. We are bottling a barrel of our 2006 Neb this week, our first from Domenicato! We have a half bbl from 2007 as well. If we could get one barrel a year out of this tiny plot I'll be thrilled!

SO2 and Camels

The above apparatus is used to run an Aeration/Oxidation test for free sulfur dioxide (SO2), a winemaker's primary tool in fighting oxidation and to a lesser extent microbial spoilage. It looks pretty 'mad-scientist'-like but it's relatively practical chemistry at work.

The pear-shaped flask at the bottom contains the wine and a big dose of acid, which combined with aspiration (pulling some air though the solution with a vacuum pump) liberates the free SO2. The free SO2 essentially travels up through a condenser (cold water) and is trapped in the solution in the top flask. The top flask contains hydrogen peroxide (H2O2) and an indicator solution/dye. It begins the test a green color and turns purple in the presence of the SO2. We can then titrate this solution with Sodium Hydroxide (NaOH) to calculate the free SO2. Ill spare you the boring details of the chemistry, its pretty easy and fairly accurate; it's downside is that it takes 10 minutes of aspiration to run a test.

We began another round of racking in the cellar this week. Ryan racked our 2006 wines from the Camel Hill Vineyard(Merlot, Cab Sauv, Cab Franc and our Lexington Meritage (so far 68% Cab Sauv/20% Cab Franc/12% Merlot)) to tank yesterday. While he was washing the empty barrels i ran analysis (Free SO2, VA (Volatile Acidity), pH and TA) on the wine in tank. We are going to do a little blending, correct the SO2 and return the wines to barrel.

I feel like I have a pretty good gauge on where these wines are going at this point in their life. 2006 is a much more classically styled vintage, especially when compared to 2005. The 05's needed ever day of the almost 2 year we gave them in barrel, while the 06's should be ready for bottling in another 4-5 months. The are much more suave and nuanced; the 05's are much more structured.

The Lexington and Cab Franc have darker and denser flavors- think blackberry and coffee. We only have a single barrel of Camel Hill Cab Sauv and it is getting blended into the remaining Camel Hill Merlot. It added a little more heft to the Merlot and filled in the mid-palate nicely.

I am headed up to Tahoe early tomorrow for a little snowboarding action; got a new board last week and am super excited to try it out.

More soon....