For those looking to complete the Gaining Mirren’s Trust quest in Outland for the World of Warcraft Classic, you’ll need to get Nethergarde Bitter, a specific drink you’ll only find in one place. It’s much easier to find than trying to manage a particular mob or place, making it much easier for everyone to hunt. You don’t have to wait for a timer if more people try to buy an item from a character, so there won’t be long lines or waiting times waiting for you.
All you have to do to find this item is talk to Bernie Heisten, an NPC at Nethergarde Keep on the Eastern Kingdoms continent. When you get there, turn left and there will be a small castle that you can enter. The building is difficult to overlook. Once inside, keep to the left as far as possible and you will be able to find Bernie. It is a standard supplier of NPC food and beverages.
You can buy the item, Nethergarde Bitter for 19 silver. You only need to purchase an item once to gain Mirren’s Trust. When traveling to new portals, you can expect lengthy tests on your journey through new areas.