PlinyTheMiddleAged
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Do the recommended salt additions from the primer and/or Bru'n Water account for boil-off or not?
If I follow the primer suggestions and add 1 teaspoon each of gypsum and calcium chloride to each five gallons of water used (or 0.2 teaspoons per gallon), do I have to account for my boil-off rate in any way? As a very simple example, I'll ignore grain absorption losses and deal only with boil-off volume losses. I start with 6 gallons of total water volume so I add 0.2 teaspoons per gallon of each salt (gypsum and calcium chloride) per the primer. If I boil for one hour with a boil-off rate of 1 gal/hour, then I end up with 5 gallons of wort containing 0.24 teaspoons per gallon of each salt (0.2*6/5=0.24). However, if my recipe calls instead for a 2 hour boil, I end up with 4 gallons of wort containing 0.30 teaspoons per gallon of each salt (0.2*6/4=0.30). I see that Bru'n Water has a total batch volume cell on the Water Adjustments tab, but it is only used for color estimation.
I assume I have to add salt per gallon of total water used and not the final water volume since salt additions, in general, can be used to adjust mash pH - that is, the salt content prior to boiling is important. The salt content of the final wort/beer is then just a function of my boil-off rate, and I shouldn't worry about it.
Thanks in advance!
If I follow the primer suggestions and add 1 teaspoon each of gypsum and calcium chloride to each five gallons of water used (or 0.2 teaspoons per gallon), do I have to account for my boil-off rate in any way? As a very simple example, I'll ignore grain absorption losses and deal only with boil-off volume losses. I start with 6 gallons of total water volume so I add 0.2 teaspoons per gallon of each salt (gypsum and calcium chloride) per the primer. If I boil for one hour with a boil-off rate of 1 gal/hour, then I end up with 5 gallons of wort containing 0.24 teaspoons per gallon of each salt (0.2*6/5=0.24). However, if my recipe calls instead for a 2 hour boil, I end up with 4 gallons of wort containing 0.30 teaspoons per gallon of each salt (0.2*6/4=0.30). I see that Bru'n Water has a total batch volume cell on the Water Adjustments tab, but it is only used for color estimation.
I assume I have to add salt per gallon of total water used and not the final water volume since salt additions, in general, can be used to adjust mash pH - that is, the salt content prior to boiling is important. The salt content of the final wort/beer is then just a function of my boil-off rate, and I shouldn't worry about it.
Thanks in advance!