Showing posts with label Sugar-sampling. Show all posts
Showing posts with label Sugar-sampling. Show all posts

Friday, September 18, 2020

Ash.

As the idiom goes, "there's no smoke without fire."  There is also no fire without ash - a lot of it - and everything in Napa is covered in ash.
Venturing into Vinoland's Cabernet sauvignon grapes today to perform a sugar sample (22.8 °Brix, they're on a good trajectory), I couldn't help but notice how much ash is on the fruit.  This fiery-growing season, it seems grape-growers have more to worry about than just smoke taint.  I don't recall ash being this much of an issue in the calamitous fires of 2017.  Always something new in farming.  If it isn't an insidious insect infestation, it's a natural disaster. 
The air quality the past three days has been the clearest and most smoke free since the 18th of August, thank goodness.  However, the wind is supposed to shift and bring the smoke back into the Bay Area on Saturday.  A reminder that a lot of California is still on fire.
As with the Pinot grigo, I will have Vinomaker go through the vineyard with a leaf blower, prior to harvest, and try to dislodge some of the ash on the berries.  Not a vineyard operation I ever could have imagined needing to be performed, but clean fruit is the goal.

Tuesday, September 15, 2020

Grapey-miscellany and stuff, etc.

Two days of doing stuff.  But nothing particularly riveting.  A bit like all of 2020, to be honest.  Sigh.
Yesterday morning, to give Vinomaker a hand, I spent some time rehydrating yeasts for the Pinot grigio and Orange muscat alcoholic fermentations.  (Photo is of Cross Evolution.)  Like a mad professor, Vinomaker is always experimenting with different yeasts, especially for the white wine grapes.  It is rather interesting, and something one wouldn't necessarily have the freedom to do on a commercial scale.  The varied yeast strains really do produce distinct wines.  There were five batches in all and consequently the kitchen smelled like yeast for hours.
I also performed the first Syrah sugar sample of the season - 22.8 °Brix, not bad.  The seeds are almost completely brown and the berries have good flavour.  I ate quite a bit of the stuff as I walked through the vineyard sampling.  Sun warmed grapes are the best snack.
This morning I watched a couple of webinars, one was eminently better than the other.  Today's guest on Behind the Wines was Wink Lorch. Wink (what a simply brilliant name) who is English, is an expert and author of books on the wines and vineyards of Jura and Savoie.  I can't remember the last time I had a wine from either French Alpine region, but it was probably in the Wines of the World class I took in 2012.  The lively discussion on the history, pedigree and DNA of such grape varieties as Savagnin and Mondeuse was great grapey-geek stuff.
I...need...to...get...a...job!

Monday, August 31, 2020

Tasty grapes.

I probably didn't have to get my refractometer out today and perform a sugar sample of the Pinot grigio (PG).  Nope, I really should have known that the PG grapes were very close to maturity, and thus harvest, by simply observing my chickens' behaviour of late.  Yup, my six girls are really enjoying the ripening grapes.  Rather unfortunate, that.
There is a retaining wall at the top of the PG block and Lizzie, Pansy, Maro, Annie, Rosie and Gracie seem quite content to sit there and snack away to their little hearts' content.  The rachis in the photograph is picked clean, absolutely nekkid.  Full clusters on the far side of the vine that they cannot reach are still intact.  And I thought I had problems with the wild bird population.  Hmmph.
I sampled anyway and the PG is at 23.2 °Brix; the grapes taste fabulous and, what's left of them, look great.  Now, if I could train the chickens to poop only in the vineyard I may overlook their thieving of my hard-farmed crop.

Tuesday, October 23, 2018

Just a quick Cab drive away.

The Cabernet sauvignon (CS) fruit looks good this year, but it's not the best I've ever seen it.  (That distinction belongs to the 2010 crop.)  The CS fruit definitely doesn't look as good as the Pinot grigio, or the Syrah.  A quick sugar reading today showed that the CS is at 24° Brix.  The weather has cooled down considerably, and even though there is warmer than average temperatures forecast for this weekend, the fruit is as mature as it is going to get.  It's time to get the CS in.  Taxi!

Sunday, September 23, 2018

Secondly, Syrah.

I was out and about with my handy dandy refractometer again today, sugar-sampling Vinoland's Syrah grapes.  The fruit looks fantastic, but it isn't ready for harvest yet.  I got a reading of 21 °Brix, and seeing as we don't harvest until the grapes are close to 25 °Brix, we have a bit of a way to go still.  Acidity is lovely, however there's still a little green component in the flavour.  I think it's going to be a good Syrah season.

Friday, September 21, 2018

Through the refractometer window.

Today was the first sugar-sampling of the season.  Using my trusty refractometer, to ascertain the level of sugar in a small sample of Pinot grigio juice, I got a reading of 23.2 °Brix.  A good start, but the flavours aren't quite there yet.
My handheld refractometer is a very useful instrument to have around, it helps makes my job easy.  A large proportion of the soluble solids in grape juice are sugars and it is the ripeness of the fruit (the percentage Brix) that I am trying to determine.  (Fructose and glucose are the main sugars in grape juice, combining as the disaccharide, sucrose.)  The sweeter the juice, the more it will bend the light that passes through it (refraction).  It is the angle of the light, the refractive index, that when viewed through the eyepiece of the refractometer, gives the level, or measurement, of sugar (i.e., grams of sugar per 100 grams of juice) in the sample.  See, easy peasy.  I'll leave the harder part to Vinomaker; determining the acid content and pH.
It is almost harvest time.  I predict I have a busy month ahead of me.