Originally Posted by brewinginct
What is the largest amount of wort that you would recommend boiling in a 5 gallon pot? I'm brewing on a glass top stove so my biggest concern is boil over, I need to avoid that at all costs.
Is 3.5 gallons the most I can safely do without really risking boiling over or is that too much? The recipe I based my recipe off of said to use 4.5 gallons but I feel like that would almost guarantee a boil over.
Also, what difference in taste would there be between doing a 3.5 gallon boil vs. a 4.5 gallon boil? If it's the same difference then I might as well play it safe with a 3.5 gallon boil.
I've seen 7 gallons of wort boil over in a 13 gallon kettle. It isn't really possible to avoid boil overs by reducing volume. Sure, it might make it easier to control, but in the end you just have to watch it.
As for the effects... less water means more potential caramelization. Also, hop utilization will change with volume and wort gravity.
All in all, I'd say stick with the 3.5 gallon boil. It is just safer for you at the time.