I can't prove that it was the popcorn that caused the runoff problems but it happened none the less. It could attributed to one of those PSAs: Don't drink a ton of beer before mashing in.
Originally Posted by boydster
Ha! I'm laughing, but that sounds like it was a PITA at the time. I do BIAB, so getting the popcorn and grains out of the kettle was a cinch. Haven't ever tried it in a traditional tun.
Yeah my wife was laughing too - until she saw spent grain and wort spilled all over the floor as I tried to reattach the filter. Not to mention the swearing.
I don't know about you but I totally underestimated just how much volume a pound and a half of popped popcorn is.
So I gotta ask, how on Earth did you fit it all into your brewing bag?!?
I think to answer the OP's question, if you're doing an extract brew, you will want to mash the popcorn for a full 60 minutes. boydster has proven you can do it BIAB style - but you'll need a big kettle for sure.
And my last advice, take note of what I did for this, and do the opposite