The Perfect Stout

I'm on a quest, a quest to make the perfect stout. I know I can do it -- brewing's in my blood. I just need to find the right recipe... The Frostmane trolls grow a plant, shimmerweed, high up in the hills to the east. They use it in their strange, tribal rituals. We dwarves haven't found much use for it, but it has a unique taste...and I want to experiment with it in my brews! Get me some shimmerweed from Frostmane seers, or swipe it from the trolls' shimmerweed baskets.