2 year old frozen hops - Still good?

[diy_zymurgist]

I found some hops in my freezer that have been there for 2 years. I assume I can still use them. Should I adjust the amounts to compensate for any bittering or flavor loss?

 

[unionrdr]

I wouldn't think they'd need too much adjusting being frozen. But they will need a little at that point. I have some NZ hops that'll be 2 years old this summer. May have to use'em for aroma hopping?