What is a cultured yeast?

What is a cultured yeast?

• A. A wild yeast found on grape skins.
• B. An inoculated yeast cultivated in a lab to produce a controlled fermentation.
• C. A yeast used only in baking.
• D. A yeast that ferments beer.

Answer: (B)

In winemaking, a cultured yeast is an inoculated yeast that has been selected and grown in controlled conditions to carry out the fermentation in a predictable, controlled way. This is done so fermentation proceeds at a desired rate, with specific temperatures and flavor development, and to reduce the chance of problems from wild yeast doing unpredictable work. Wild yeast on grape skins can initiate fermentation, but it’s variable and harder to manage. A yeast used only in baking describes a different usage context, not the wine-focused idea of controlled fermentation. A yeast that ferments beer refers to beer production, not the specific concept of a lab-cultured inoculant for wine.

In winemaking, a cultured yeast is an inoculated yeast that has been selected and grown in controlled conditions to carry out the fermentation in a predictable, controlled way. This is done so fermentation proceeds at a desired rate, with specific temperatures and flavor development, and to reduce the chance of problems from wild yeast doing unpredictable work.

Wild yeast on grape skins can initiate fermentation, but it’s variable and harder to manage. A yeast used only in baking describes a different usage context, not the wine-focused idea of controlled fermentation. A yeast that ferments beer refers to beer production, not the specific concept of a lab-cultured inoculant for wine.