Dry hopping add bitterness?

[OSUmoney83]

will dry hopping in the secondary add any bitterness or just aroma?

 

[Janx]

Just aroma. You need to heat the hops to extract the bitterness. Thus the long boil for bittering hops.

It seems to me that more aroma hops sometimes make the beer seem more bitter, FWIW, but dry hops pretty much add aroma.