Whenever I make ash reshteh, I always cook with fresh herbs and greens. It's my personal preference for flavor and freshness. But if you do not have fresh parsley or green onions you can totally swap them out for dry. Typically, you use about 3 times as much fresh herbs as you do dry. So for this recipe, we are using about 1/2-cup of chopped fresh green onions, so substitute with 3 tablespoons of dried. I used about 1-cup of chopped fresh parsley that you can substitute with 1/3-cup of dried parsley.