Tartan A31

Imperial Yeast's A31 Tartan is a traditional Scottish brewers yeast strain that is well suited for malt forward beers. It has a clean fermentation character and will work well in a variety of styles. If you desire a higher ester profile you should use this strain at the top end of the temperature range.

If you need a substitution we recommend Imperial A01 House or A10 Darkness, Wyeast Scottish Ale 1728, White Labs Edinburgh Scottish Ale WLP028, or Omega Scottish Ale OYL015.

It's a fantastic choice for malt forward styles but practically any beer will work.

Flocculation: Medium

Attenuation: 70-75%

Optimal Fermentation Temperature: 65 - 70F

Alcohol Tolerance: 10%

It's a great choice for these styles:

• Wee Heavy
• Red Ale
• American Brown Ale
• Cream Ale
• American Wheat Beer
• Blonde Ale
• Black IPA
• Robust Porter
• American Stout
• Winter Seasonal Beer
• American Barleywine
• Imperial Stout
• American Strong Ale
• Wheatwine
• English Mild
• Bitter
• Extra Special Bitter (ESB)
• Pale Ale
• Irish Dry Stout
• English IPA
• Oatmeal Stout
• Tropical Stout
• British Strong Ale
• English Barleywine
• Old Ale
• Foreign Extra Stout
• California Common
• American Amber Ale
• American IPA
• Red IPA
• American Pale Ale
• Imperial IPA
• Altbier