Beer-lord wrote:Recently I read that some of the off brands of grain aren't as efficient as others. I looked into this after I bought the Morebeer Viking Malt as I did see some comments by some that some didn't get the efficiency they have with other grains. I would also take a look at your thermometer and make sure it's accurate as well as stir the grains at least once every 15 minutes.
FWIW I have had 0 efficacy problems with the Viking malts. They are not exactly an "off brand", it just seems so here. Pretty much all of the northern European farmhouse and macro/micro breweries use malts from them. Now some less modified but rare these days European (mostly German or Belgian) malts, sure you can have efficiency problems if you try to do a shorter mash duration or combine them with malts that can't self-convert. But this would not be the case with the Viking malts, as they are not under modified.
That said, I don't try to do 30 minute mashes or stuff like that.
If anything is happening to people it's just that their crush is set up for some kind of grain they are used to that has more plump kernels, and when they switch malt brands and the grains aren't as plump they don't crush to the same extent.
MoreBeers crush is pretty aggressive, there is always some flour in my bags, and I've gotten 78-80% mash efficiency repeatedly using Viking malt 2-row and pilsner as my base malt.
If the stuff BP is using is Malteurop grains that were malted in the US, they are European/co-op grains that could have come from many places, that were malted in a huge operation in Milwaukee WI. Which you know means that lots of them end up in certain brands of Macro beers because... that would be why there is a huge malting operation right there in Milwaukee. If those grains had horrible efficacy problems, they wouldn't be used by such people.
So, I really doubt it's the grain in of itself.