Prosecco = 2 fermentations?


I read a note somewhere (can't recall where) that implied that some Proseccos are made in what sounded like a single fermentation, under pressure, of course.
Note this would be different from the regular Charmat process which requires two separate fermentation steps. Will appreciate clarification (no pun intended).
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Reply to
Leo Bueno

No. Sparkling Prosecco - both slightly (frizzante) and fully (spumante) - is made with by charmat process (second fermentation in tanks under pressure), never by the traditional method, btw. There is an Italian sparkler however, that undergoes only one fermentation (in tanks), and this is stopped when the wine reaches 7%abv: Asti (Spumante).
Note that "prosecco" is the grape variety, not a synonym to "frizzante", as 99% of the consumers in Germany and Austria would believe.
M.
Reply to
Michael Pronay

Oops, yes, I confused the two. It was Asti Spumante that the note indicated is the product of only one pressurized fermentation.
By the way, what technique do they use to stop the Asti Spumante fermentation, filtration of the yeast?
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Reply to
Leo Bueno

The normal method of arresting a fermentation midway is to chill the tank so that the yeast goes dormant, allow it all to settle to the bottom, then sterile filter the clear liquid. In the case of a sparkling wine this all has to be done under CO2 pressure so the fizz is not lost from the wine.
Tom S
Reply to
Tom S

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