Someone please explain FWH in really simple English

[ShakerD]

K I read all the threads and the wiki and I still don't understand.

Is it adding hops to the mash? Before doughing in?

 

[chefmike]

to the boil kettle with the first run off.

mash, vorlauf, add first wort hops to kettle, run off on top.

 

[ShakerD]

Thank you

But how does this create flavor and aroma when it's going to get boiled for 60-90 min?

 

[VTBrewer]

The general premise is that the higher PH of the first runnings will better utilize the hops (assuming you're using a high AA one), and minimize and utilization loss from the break.