Call Us Toll-Free 888.449.2739

Thames Valley Ale Yeast Activator - Wyeast 1275 - 4.25 oz.

$6.29

Product Number: ACT1275

Availability: In stock

$6.29

This strain produces classic British bitters with a rich, complex flavor profile. The yeast has a light malt character, low fruitiness, low esters and is clean and well balanced.


  • Pure pitchable yeast for brewing
  • Contains 100 billion yeast cells
  • Designed to directly inoculate 5 gallons of wort
  • Contains 125 mls (4.25 oz. or 128 grams) liquid yeast & malt-based nutrient blend


Styles: Brown Porter, Dry Stout, Düsseldorf Altbier, Extra Special/Strong Bitter (English Pale Ale), Foreign Extra Stout, Northern English Brown Ale, Robust Porter, Special/Best/Premium Bitter, Standard/Ordinary Bitter



Keep refrigerated. Do not freeze.

Activator™ packages will sometimes swell slightly, or moderately during shipping or later while properly stored. This is not an indication of deterioration if the package is less than 6 months old and has been properly handled. This is result of trace amounts of nutrients, still available at the time packaging, causing small amount of culture activity and CO2 production. Some strains are more prone to this than others.




Color No
Ideal Temperature Range (°F) 62-72F (16-22 C)
Attenuation (%) 77
Flocculation Low-Medium
Alcohol Tolerance (%) 10
Rate of Fermentation No
Foam Production No
Nutrient Requirements No
H2S Production No
SO2 Production No
Profile Ale
Manufacturer Wyeast Activator

Customer Reviews

1 Person has reviewed this product

Overall Rating: 4.4

Add Your Review
Set Descending Direction

English Ale! Review by TColb

(Posted on 3/14/13)

Product Rating:

I used this in my Spitfire clone. It fermented really well and finished very clean. It's listed as a med-low flocculator, my beer still ended up nice and clear. Great for British Bitters.

Set Descending Direction
Thames Valley Ale Yeast Activator - Wyeast 1275 - 4.25 oz.