Wine Transfer Notes

[Two of the "Old Boys". These demijons came from Grondola in the Tuscan Appenines. They're at least 55 years old if we give it a break, 'cos if it travelled with Paolo's family in the first migration to England, in the 1920s, then they're older]

Some basic info on the wines we've been transferring over the past couple of weeks.

Please note that the Natural Sulfite Level ("NSL") is that which occurs in our wine naturally. We measured it last weekend. What we measure here are the Free Sulfites that are able to deal with oxygen in the wine and keep it locked up out of the liquid, preventing it turning the wine or feeding any residual yeasts/sugars. You'll remember that we have not added anything to this wine at all.

"ppm" is "parts per million.

The Organic Standard for Wine is 120ppm free sulfites ("Org")

The Federal Standard for Wines is 350ppm free sulfites ("Fed")

The Californian Standard for Red Wine is 175ppm / White Wine is 225ppm ("CA")

"Bordeaux Blend" comprises Cabernet Sauvignon, cabernet Franc and Merlot.

Varietal or Blend ------------- NSL --------pH------------Final ppm

-------------------------------------------------------------------- (Org = 120ppm)

San Giovese ----------------------- 31ppm -----3.8--------------80ppm
San Giovese/Pinot Noir Blend - 33ppm -------3.8--------------80ppm
Shiraz ------------------------------ 37ppm -----4.0 - 4.2-------60ppm
Bordeaux Blend ------------------ 40ppm -----3.8 - 4.0-------60ppm
Cab Franc ------------------------- 35ppm ------3.8 - 4.0------60ppm

For wine to be drunk between now and September, the NSL sulfite levels are fine. Since we'll be ageing these wines, and then they'll sit in bottles, these levels are too low and there are not enough free sulfites to deal with the controlled oxidation as they sit in barrels and any residual yeasts/sugars that may want to get something started.

Yeast can survive in up to 15% by volume alcohol. Maybe why we see a lot of those higher alcohol wines is that it's hoped they'll deal with residual yeasts so sulfiting can be reduced, but you need very high acid to deal with high alcohol so lord knows what's thrown in to knock the acidic taste back.

For us, this is a difficult time. We do not want to lose the wine. We do not want to use even, in our minds, the excessive Org standard for sulfiting. We are fortunate to have good Acid. So we make a judgement call. This year we decided to add minimum sulfite still way below the lowest Org Standard and below the recommended sulfite levels for the given ppm, pH and volume. If the San Giovese and Pinot had ended up in French Oak barrels then we would have stuck to 60ppm, as it is, we're using new (to us) technology and don't know how the wine will age in it so we erred on caution but still well below Org Standards.

As far as our chemical intervention goes, this is it the beginning and end of it.

[Two of our Bordeaux Blend French oak Barrels. They're handsome aren't they]

Technorati Tags:ageing, bordeaux, cabernet, french oak, pinot, san giovese, shiraz, via vecchia, wine barrel, winery
Generated By Technorati Tag Generator