(Part two of a two part series,
see last month's part one here.)
Our look into production of sparkling wine continues! Last month we learned what to look for in the vineyard and how to ferment our base wine. In part two of this series, we move from tirage and riddling to disgorgement and dosage. This month we'll delve into the final stage of transforming our still wine into a bottle full of bubbles!
The next step after the wine finishes its primary fermentation is called tirage. A small amount of yeast and sugar are added to the wine, which is then bottled. Inside the bottle, a secondary fermentation takes place, creating the small CO2 bubbles that sparkling wine drinkers love.
The bottles are then aged anywhere from months to years, picking up additional mouthfeel and complexity while aging on the lees from the previous step. During this aging, the bottles are angled downward and slowly turned to help move the lees into the neck of the bottle. This is the process known as riddling.
Once the wine has been properly aged and the lees are at the end of the bottle neck, the bottles are ready for disgorgement. The necks are frozen, and the bottles are opened, allowing the frozen plug of lees to be removed, leaving behind the sparkling wine itself.
Lastly, there is the optional step of dosage, or adding back residual sugar to the wine before again being corked for the final time. At this point, the wine is now finished and ready to be enjoyed!
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