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#389584 - 12-30-2018 16:20:38 KelliWhite: Sweetness in Wine
TomHill Offline
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Elvis Has Entered the Building!

Registered: 02-15-2004 17:42:19
Posts: 10733
Loc: LosAlamos
Very interesting article by KelliWhite, as linked by WineTerroirist, in GuildSomm:
SugarInWine .

It discusses the importance of the glucose/fructose ratio and how the fermentation can vary that ratio. And that fructose can taste twice as sweet as glucose.
The one thing that caught my attention was that the conversion of grape sugars to alcohol can vary according to a number of factors, including "the architecture of the tank". Hmmm...that a new one to me and, as RandalGraham would say "counterintuitive".

It talks a lot about the concept of leaving RS in "dry" wines and how it can affect your sense of the wine.

Anyway, a rather interesting read by Kelli I thought.
Tom

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#389589 - 12-31-2018 13:33:06 Re: KelliWhite: Sweetness in Wine [Re: TomHill]
Florida Jim Offline
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Registered: 12-24-2000 08:00:00
Posts: 7671
Loc: Sonoma, CA and St. Pete., FL
Tom,
“Architecture of the tank” may be a reference to open or closed top. Open top fermenters tend to evaporate or “blow off” more alcohol creating what appears to be a change in conversion rate.
Maybe.
Best, Jim
_________________________
Jim Cowan
www.CowanCellars.com

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#389592 - 01-02-2019 13:30:21 Hmmm... [Re: Florida Jim]
TomHill Offline
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Elvis Has Entered the Building!

Registered: 02-15-2004 17:42:19
Posts: 10733
Loc: LosAlamos
Originally Posted By: "Jim"
Tom,
“Architecture of the tank” may be a reference to open or closed top. Open top fermenters tend to evaporate or “blow off” more alcohol creating what appears to be a change in conversion rate.
Maybe.
Best, Jim
_________________________
Jim Cowan
www.CowanCellars.com


Hmmm...hadn't thought about that, Jim. I was thinking concrete eggs and amphorae in which some dubious claims are made for the efficacy of those shapes.
Tom

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#389604 - 01-02-2019 19:45:33 Re: Hmmm... [Re: TomHill]
Florida Jim Offline
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Registered: 12-24-2000 08:00:00
Posts: 7671
Loc: Sonoma, CA and St. Pete., FL
Tom,
Any of those claims have to do with conversion rate?
Best, Jim
_________________________
Jim Cowan
www.CowanCellars.com

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#389605 - 01-03-2019 08:51:09 Nope.. [Re: Florida Jim]
TomHill Offline
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Elvis Has Entered the Building!

Registered: 02-15-2004 17:42:19
Posts: 10733
Loc: LosAlamos
Originally Posted By: Florida Jim
Tom,
Any of those claims have to do with conversion rate?
Best, Jim

Nope, Jim...none that I recall.

I don't recall any of the specifics, but I recall claims for the shape of the concrete egg fermentors enhancing the flow of the fermenting must...claims that immediately raise my BS antennae.
Tom

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