I have tried Mangrove Jack's M76 Bavarian Lager and M84 Bohemian Lager for bock beer, and I was satisfied with them. However, I only brew 8 litre, so I have enough with 1 sachet. Even then, I hydrate it and then put it in the room where the fermentation will occur, place my cooled wort there too, and then add the yeast the following morning so that I am sure they have the same temperature.