Wayne, I wonder if you can scale a 5gal recipe to a 500gals with direct proportional rule or if you need to use some different formulas to build your recipes. I know some stuff like PH buffering is not linear, so it is not like adding twice the amount of acidulated malt to twice the water will produce same PH, or will it? Do you care for mash PH?
Thanks,
Nilo
Nilo,
The recipe I first posted many years ago was in percentages. That was deliberate. Everyone's system is a bit different. Efficiency, water and many other factors go into these differences.
The recipe I based those numbers off of was for 500 gallons. I have brewed that recipe in my homebrew system at both 5 and 10 gallon levels with very good results. The recipe we used at SandLot was basically the same in percentages. We never used any water adjustments and the pH always hit 5.2.
Brewing it at home and at Station 26, I use Denver water from the same sources as was used at SandLot. pH always hits 5.2. The biggest difference in the intervening years is that Denver water has changed from using chlorine for water sanitizing to chloramine. At SandLot we used a carbon filter. At home I use a carbon filter. At Station 26 we use a water filter that has a special media to remove chloramine.
There are differences between brewing 5 and 500 gallons of the same beer. In this case, I scaled down 500 gallons to 5 to post here. Many, including you, comment about the lack of body. When I brewed the 500 gallon version yesterday, I perceived a very full body in the hydrometer sample post boil. Perhaps an increase in the amount of oats may help with that.
I do use BeerSmith to help me convert my homebrew/test batches to 500 gallon versions. I do have all the different numbers and efficiencies for each system programmed into BerrSmith. The conversion is from one specific system to another specific system, not just 5-500 using the same numbers. I have come up with the numbers over the course of use of both systems. Each time I brew, I record the numbers and gradually tweak the system specifics in BeerSmith. Over the course of a couple of hundred brews on the homebrew system and now 42 on the 15 bbl system, I have a pretty good idea of what happens when I convert the data.
BTW, the brew went wonderfully smooth. Each time I have previously brewed a 15 bbl batch of this beer, lauter has bee a major PITA. Yesterday I threw in quite a lot of rice hulls and the lauter was super smooth. A total of 1 hour and 15 minutes to collect 18 bbls in the kettle.
The kettle runs about 6% evaporation so after a 90 minute boil, I ended with just a touch over 17 bbls in the kettle. I changed the recipe just a touch by adding some Cascade hops in the whirlpool for a 20 minute steep. I have done this in a test batch and really liked the result. More craft than crafty
I have a picture of the grain bed, post lauter, just before raking it out of the tun. I put that in the next post.
Sorry if I went a bit off topic.