Baron von BeeGee
Beer Bully
Generally speaking, it varies. With this particular recipe I'd boil for ~15 minutes.
It would probably help to see the mash graph; I'll try and get that hosted and linked. The pull time for the decoction is what tells the story: 70 minutes should account for pulling the decoction, raising the temperature slowly to 158F, holding for ~15m, then slowly raising to boiling and boiling for 15-20m, and then reincorporating it to the mash. It's probably a conservative figure and I imagine I did it all in closer to an hour or less.
It would probably help to see the mash graph; I'll try and get that hosted and linked. The pull time for the decoction is what tells the story: 70 minutes should account for pulling the decoction, raising the temperature slowly to 158F, holding for ~15m, then slowly raising to boiling and boiling for 15-20m, and then reincorporating it to the mash. It's probably a conservative figure and I imagine I did it all in closer to an hour or less.