Check the listing for details. Fermentis SafBrew HA-18 25 Grams. Condition: New. Listed at 17.58 USD. Fermentis SafBrew HA-18 25 Grams The obvious choice for very high gravity beers SafBrew™ HA-18 is a powerful solution (consisting of POF+ Active Dry Brewer’s Yeast and enzymes) for the production of high-gravity and particularly high abv beers – such as strong ales, barley wines and barrel aged beers with very high density. It has a very good resistance to osmotic pressure and high fermentation temperatures (thermotolerant yeast). It’s like a super yeast, if you’re aiming for a big, boozy brew, this yeast has got your back! Fermentis dry brewing yeasts are well known for their ability to produce a large variety of beer styles. In order to compare our strains, we ran fermentation trials in laboratory conditions with a standard wort for all the strains and standard temperature conditions (SafLager: 12°C for 48h then 14°C / SafAle: 20°C). We focused on the following parameters: Alcohol production, residual sugars, flocculation and fermentation kinetic. Given the impact of yeast of the quality of the final beer it is recommended to respect the recommended fermentation instructions.