So I'm looking at boiling pots for my 5 gal system. I've read you can boil 2 gallons ahead of time (like the night before) and let it cool, and boil 3.5 gallons for the wort at brew time. Then use the 2 gallons to help cool the wort down when done to bring the total volume up to 5 gallons total.
Is there any difference in taste with this method since the hops don't steep in all of the water? Would you get better taste by doing it all at once?
My Mom has a 21.5 quart canning pot that is free for me to use (good since I've spend lots of $ so far getting everything together). I'd have to only boil the 3.5 gal in it, but if the taste is going to suffer, I'll consider getting a larger one instead.