It is knowing where and how much wort your brew rig retains wort that does not make it into the fermentor. Divide that to the hypothetical what if you got "perfect" 100% efficiency. How much wort you have at a measured gravity. I would guess that whatever program you are using allows adjustments to its predicted efficiency which you could bump lower for high OG recipes, and just pour off the extra points to hit your preboil gravity target if needed for the low OG brews. From my perspective, I would rather pour off a some points, then have to add DME which alters the recipe if the preboil OG comes up short. Then after lautering / sparging, I tend to either exceed or hit my preboil gravity which is easily adjusted by pouring off the required points and then adding back the volume of water. You will come close, but some of the times you will have significant over and under OG experiences.Īs an alternative approach to finding a magic configuration when outside your midrange OG brews, I do the following.Īs I enjoy changing up my mash plan and recipes almost every time, my approach to this challenge is to set a slightly lower than expected mash efficiency, which results in just a couple dollars more grain. Whatever brewing software you are using, I doubt there is a magic configuration for your system that will deliver on target efficiency every time if you change up recipes, OGs, and mash plans. when i move to lower gravity mashing my efficiency skyrockets compared to the estimate and then vice versa when moving to higher gravity mashes.īelow is a chart that is in the thread that plots the relationship.Īs you can see there are a lot of process variables including crush size, fermentables mashed or steeped, mash plan (temp, time, step, decoction), batch sparge vs fly sparge, number of batch sparge, etc, so dialing in the exact efficiency every time without a specific recipe's previous experience and a very consistent process will be challenging. The predictions seem to be on point via my current system design when brewing in the mid range of gravities. I'm hoping there is a wizard out there that can help put this in perspective for me. call me even crazier because it seems to be an inverse relationship (more losses = increased mash efficiency - i don't understand how a change in a post boil value should affect a mash value and beyond that how having more loss will equate to better efficiency). I have seen that that changing the losses to trub / chiller will affect mash efficiency.call me crazy but i don't understand why. But adjusting the efficiency of the mash through the BH efficiency seems to be limited and actually won't change after a certain point. I wanted to simply adjust my estimated per profile based on the type of recipe - eg: much lower efficiency seen in a more high gravity mash. I've been poking around trying to figure how the program calculates these estimates. I'm tweaking my equipment profiles again because I've had a few hiccups with batches where i've been way over my estimated efficiency (like 90% on an estimated 82%) and then in other batches under (70is on an estimated 80%).
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