Originally Posted by LiquidFlame
Thanks for the quck response. This will be a 5 gallon batch, I plan on boiling with 3 gallons of watter to compensate for water evaporate during the boil and some lost to the trub. So it sounds like for the LME I should do half and half. This won't mess anything up with the color and flavor?
For partial boils (in your case, 3 gallons), adding some of the extract at the end of the boil will only improve
color and flavor. This is because you are reducing risk of any caramelization/Maillard reactions that TyTanium was talking about, which tend to happen if you have all of your extract in a partial boil (i.e. not boiling 5-6 gallons of water at once). This helps reduce any burnt tastes, and improves the color of your beer (whereas boiling all extract for 60 minutes tends to darken the beer).