nala
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I find the topic very interesting, but I cannot understand why the Grainfather gives these amazing results.HBHB said:We managed a 9kg grain bill which was a squeeze along with quite a few up in the 7-8+ kg range mate. Most of course were in the 4.5-6kg range. Would have to pull the figures for exact efficiencies, but the 9kg was still around 72% off the top of my head. That's probably the lowest figures we've pulled. The Gympie demo last Friday was dialled in on the recipe at 75% Brewhouse efficiency and overshot pre boil estimated Gravity by 0.013 and post boil by 0.011. That was a 5.5kg pale malt, .2kg caramunich 1 and .2kg wheat malt grain bill. Working on a foggy memory here. I'm sure one of the guys could check it.
Our test unit shall henceforth be known as the town tart, since it's been fondled by every bloke and his dog between Bundy and Brisbane.
Roger D took the unit for some trials and in a moment of weakness did a crazy big double choc cherry oatmeal stout that could be the cure for the common cold. He can add his figures, but it was a squeeze along with some familiarity issues that arose.
Highest was on a fairly large lager grain bill which was up Over 88% BHE. Again, other guys will have the figures. Not exactly typical, but certainly pretty impressive. I have a Boston lager clone on tap at the moment that is as clean as a whistle that achieved something up over the 80% BHE. It's a beer where there's nowhere to hide off flavours or astringency.
We haven't played around much with smaller grain bills and will do a few up in the coming weeks to play around with lighter session beers in the 2.6-3.5 % Abv. Something that is often missing on tap here.
Hope this helps.
Brewing is quite a simple process, we use water, milled grains, control the time and temperature for mashing, we circulate the wort, we sparge etc etc. Could someone explain why the Grainfather does this better than a 3V system?
My 3V system has all the attributes of the Grainfather but I must confess that I get nothing like these results.
I appreciate that a lot of the excitement and eulogy about another new inovation have to taken into account but how can the application of time and temperature on a standard commodity like grain give these amazing results?