Beer Forum

FYI: I am an extract brewer who is going/researching AG. Here is my AG question...

If I know my OG after boil is to be 1.050 and my evaporation rate is for example 15%/hr, how do I calculate what my wort gravity should be before the boil? Am I over thinking this?!?

Another question please...

If I miss my target gravity after boil, can I merely add some DME to compensate?

Here is an example after boil:
Have 5 Gallons of wort with a gravity of 1.045
My target gravity is 1.060

What type of calculation/modification is needed to compensate with DME?

I guess, since the wort is already boiled, I would have to add in another gallon of water to the mix because I would have to boil the added DME correct?

I really think I'm over thinking this and perhaps bothering you guys with these types of questions. Hope not!

Thanks!

Almost forgot my original question.

What percentage of water does grain absorb? Have to calculate for that also

There some pretty good recipe calculators here

www.tastybrew.com

I'm with Heath. Get a copy of Promash or Beersmith. That or use an online calculator. The programs are only ~$20.

Travis

Thanks for the info. I will pick up a program!

I am fond of Beer Smith

Just think, I used to do that by hand once

Dogger

There are some calculations you can use if you want to do the math. Check out http://howtobrew.com if you want to know the math behind it. I have both Promash and Beersmith and I prefer just to be lazy and use one of them.

Ray Daniels' "Designing great beers" is one of my favorite books. He explains the math and process pretty well in chapter 6
Cheers,
Dr Scott