Description
SafBrew HA-18 25 g – yeast and enzyme for high gravity beer
SafBrew HA-18 from Fermentis is a blend of active dry yeast and the enzyme glucoamylase. It is made for beers where high attenuation matters, including high gravity beers such as barley wine, strong ales and barrel-aged beers with very high density. The yeast tolerates up to 18 % ABV.
HA-18 gives a lot of flavour to the finished beer thanks to high ester release. It also produces phenols, which can give a clove or spicy flavour.
Technical data
- Ideal fermentation temperature: 25–35 °C
- Attenuation: 98–102 %
- Alcohol tolerance: 18 %
- Sedimentation: medium
- Ester production: high
- Dosage: 100–160 g per 100 litres
- Contents: 25 g
Frequently asked questions about SafBrew HA-18
How much HA-18 do I need for 20 litres?
The dosage is 100–160 g per 100 litres. That is 20–32 g for 20 litres, or roughly one 25 g sachet.
Why can attenuation exceed 100 %?
Glucoamylase breaks down dextrins that ordinary brewing yeast cannot ferment. The beer becomes very dry, and attenuation can reach 98–102 %.
Does the yeast need to be rehydrated?
No. Fermentis states that it can be pitched directly into the wort at fermentation temperature, or rehydrated in ten times its weight of water or wort at 25–37 °C for 15 minutes.
Does HA-18 give a spicy flavour?
Yes, it can produce phenols with a clove or spicy flavour, as well as plenty of esters. Keep this in mind when choosing a beer style.
Related
Betaling
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