Longer boil

[prrriiide]

Aside from kettle caramelization, is there a reason for boiling longer than the first hop addition?

 

[potseeslc]

To increase gravity, some people do 90 min boils on pilsner based beers for fears of DMS.

 

[chumpsteak]

I do 90 min boils because that way I can use more water to sparge with. I think it helps my efficiency and I also think the maillard reaction creates a little more richness and depth of flavor. I wouldn't add hops over 60 min though.