If you are looking to brew a Thunderbrew Potion in Hogwarts Legacy, you will need an ingredient known as Shrivelfig Fruit. Thunderbrew is a practical concoction for combat, thanks to its capability to stun and deal damage to enemy targets. During your journey as a student in the arcane arts, you will get into situations where you might need to take on multiple opponents in a single fight. While the spells you learned in class should be enough to defend yourself, having a Thunderbrew to cast at your foes will more than grant you the edge in battle, making the Shrivelfig Fruit a vital ingredient to procure in Hogwarts Legacy.
To get Shrivelfig Fruit in Hogwarts Legacy, you must pay The Magic Neep a visit, a shop that sits in the northwestern corner of Hogsmeade. After you arrive at the fast-travel point near the apothecary, walk across the stone bridge to the north and speak with Timothy Teasdale to view his stock of purchasable goods.
You can buy Shrivelfig Seeds with 450 Galleons, which allows you to grow your own Shrivelfig Fruit using a medium or large pot in Hogwarts Legacy. Alternatively, you can spend 150 Galleons to buy Shrivelfig Fruit from Timothy, removing the need for you to grow the resource on your own. If you are planning to brew multiple Thunderbrew Potions, it might be a good investment to buy the Seeds. As a result, you will not need to visit The Magic Neep so often during your adventures.
Shrivelfig Fruit is not the only ingredient for Thunderbrew. You will also need Stench of the Dead and Leech Juice to complete the brew. The Stench of the Dead resource can be acquired from hunting down the zombie-like Inferi, which can be found around the grounds of the graveyard. As for Leech Juice, you can buy it from an NPC vendor in Hogsweade, or you can head to the southern region of Hogwarts and search the areas near bodies of water. On the ground, you can find small bug-like creatures that can be collected for Leech Juice for your Thunderbrew.