When we started the devlopment of our new Bulldog Brews beer kits, we had one simple guideline. These kits should contain the best raw materials available regardless of cost and also more malt than any other beer kit out there. The old “Premium” type kits usually contain 3 kgs although there are a few containing up to 3.6 kgs.
With the 3kg and above kits, the beer yeast often struggles to do a good job and the normal reaction to this from manufacturers is to use a low end, fast fermenting yeast strain, designed to blast through any fermentation. The advantage from a manufacturers point of view is of course fewer complaints because it “works”. The disadvantage is that it will produce boring beers, all tasting the same. Getting it right at the 4kg level is very difficult. Fermentations might end prematurely, clearing not work well etc. This took us a long time to master because we refused to use the “wham bam” type of yeast.