Flor (Spanish and Portuguese for flower) in winemaking, is a film of yeast on the surface of wine, important in the manufacture of some styles of sherry. The flor is formed naturally under certain winemaking conditions, from indigenous yeasts found in the region of Andalucía in southern Spain. Normally in winemaking, it is essential to keep young wines away from exposure to air by sealing them in airtight barrels, to avoid contamination by bacteria and yeasts that tend to spoil it. However, in the manufacture of sherries, the slightly porous oak barrels are deliberately filled only about five-sixths full with the young wine, leaving "the space of two fists" empty to allow the flor yeast to take form and the bung is not completely sealed. The flor favors cooler climates and higher humidity, so the sherries produced in the coastal Sanlúcar de Barrameda and El Puerto de Santa María have a thicker cap of flor than those produced inland in Jerez. The yeast gives the resulting sherry its distinctive fresh taste, with residual flavors of fresh bread. Depending on the development of the wine, it may be aged entirely under the veil of flor to produce a fino or manzanilla sherry, or it may be fortified to limit the growth of flor and undergo oxidative aging to produce an amontillado or oloroso sherry.

During the fermentation phase of sherry production, the flor yeast works anaerobically, converting sugar into ethanol. When all the sugar has been consumed, the physiology of the yeast changes to where it begins an aerobic process of breaking down and converting the acids into other compounds such as acetaldehyde. A waxy coating appears on the cells' exterior, causing the yeast to float to the surface and form a protective "blanket" thick enough to shield the wine from oxygen. This process drastically lowers the acidity of the wine and makes sherry one of the most aldehydic wines in the world. Studies have shown that for the flor to thrive, the wine must stay in a narrow alcohol range of 14.5% to 16% ABV. Below 14.5% the yeast will not form its protective cap, and so the wine will oxidize to the point of becoming vinegar. Above 16% the flor cannot survive, and so the wine essentially becomes an oloroso.

lmho

lmho

August 19, 2020

Play on spotify
reimagined

reimagined

July 15, 2020

Play on spotify
ley lines

ley lines

September 6, 2019

Play on spotify
get behind this

get behind this

December 21, 2018

Play on spotify
come out. you're hiding (deluxe)

come out. you're hiding (deluxe)

February 2, 2018

Play on spotify
warm blood (messyhair remix)

warm blood (messyhair remix)

August 4, 2017

Play on spotify
overbehind

overbehind

April 21, 2017

Play on spotify
guarded

guarded

March 24, 2017

Play on spotify
hold on

hold on

January 6, 2017

Play on spotify
still standing still (feat. Lostboycrow)

still standing still (feat. Lostboycrow)

December 9, 2016

Play on spotify
let me in

let me in

February 5, 2016

Play on spotify
Read more

Like this too?

Vacation Manor

Vacation Manor

Night Riots

Night Riots

The Wldlfe

The Wldlfe

courtship.

courtship.

Vinyl Theatre

Vinyl Theatre

Grizfolk

Grizfolk

COIN

COIN

HUNNY

HUNNY

The Band CAMINO

The Band CAMINO

CRUISR

CRUISR

joan

joan

Smallpools

Smallpools

Bad Suns

Bad Suns

Colony House

Colony House

lovelytheband

lovelytheband

Nightly

Nightly

Armors

Armors

Fickle Friends

Fickle Friends

Elliot Root

Elliot Root

Young Rising Sons

Young Rising Sons

このアーティストの記事はまだありません。 あなたも記事を書きませんか?