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Tags: Wine Yeast

Bold Red/High Alcohol Activator Pack

Sku: 0511

Out of Stock:You may still place an order for this item. Your order will ship as soon as more arrive. We will contact you with an ETA within 24 hours of receiving your order.

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$ 6.99

WYEAST STRAIN: 4946  |  Bold Red / High Alcohol™

Dominating, strong fermentation characteristics. Alcohol tolerant to 18% (v/v). Ideal for Zinfandel, Pinot Noir, Syrah, or any high sugar must. Good choice for restarting stuck fermentations.

Flocculation: Medium-Low
Attenuation: NA
Temperature Range: 60-85°F, 16-29°C
Alcohol Tolerance: 18% ABV


  • Apple Wine
  • Baco Noir
  • Cabernet Sauvignon
  • Chambourcin
  • Cyser (Apple Melomel)
  • Dry Mead
  • Grappa/Marc/Bagaceira
  • Marechal Foch
  • Nebbiolo (Barolo, Barbaresco)
  • Petite Sirah
  • Pinot Noir
  • Pinotage
  • Pyment (Grape Melomel)
  • Rum
  • Sparkling wine
  • Syrah/Shiraz
  • Touriga Nacional
  • Vodka
  • Zinfandel

Liquid Yeast Shipping Policy
It's hot down south, so all liquid yeast orders are shipped with an insulated pouch and two free ice packs. Liquid yeast is shipped to minimize transit time. If you order liquid yeast late in the week with a shipping method that would span the weekend we will hold your order to ship Monday. We recommend a 1 or 2 day shipping time on all liquid yeast orders. USPS Priority Mail is 2 day shipping to most of the Continental US. Liquid yeast is guaranteed viable if it spends no more than 2 days in shipping.

Liquid Yeast Warranty
As long as Liquid Yeast spends a maximum of two days in transit it is guaranteed viable and warrantied. If you receive warrantied yeast from us that does not ferment simply e-mail to receive a replacement pack or refund. Please include the batch code, manufacturer date, your original gravity reading and a second gravity reading taken at least three days after pitching. A lack of swelling in your activator pack does not indicate non-viable yeast. More information on liquid yeast and frequently asked questions can be found on Wyeast's Website.

Tags: Wine Yeast