To get the Berry Pouch in FireRed and LeafGreen, simply find and acquire any kind of Berry for the first time. The Berry Pouch will then automatically be added to the Bag, and the Berry you found will be put inside of the Berry Pouch.
The first Berry of the game (an Oran Berry) can be found hidden on the ground on Route 3, sitting between two ledges where Youngster Calvin is standing.
While getting the Berry Pouch is simple, there are a couple of prerequisites to meet first:
- Play the “tutorial” missions to help out Oak
- Reach Pewter City
- Defeat Brock so that you can walk to Route 3
How To Get the Berry Pouch
Since the first Berry of the game is on Route 3, we need to defeat Brock in the Pewter City Gym.
If you try to enter Route 3 without defeating Brock, then you’ll be stopped in your tracks.
Note: You can pick up or acquire any Berry in the game via any method to get your Berry Pouch. I’m just going to go over the quickest way to get the Pouch after starting a new game.
After defeating Brock, you can head back to the east side of Pewter City and enter Route 3, where an Oran Berry is hidden on the ground.
Walk through Route 3 until you see two ledges with a Youngster standing between them (it’s the trainer in the backwards yellow baseball cap).
There is a Berry hidden on a tile between these two ledges (the tile will be marked with a unique grass pattern that stands out.)
Just walk up and press A while looking at this tile to find the Oran Berry.
After you pick it up, the game will tell you that you put the Oran Berry in your Berry Pouch.
Once the Berry has been put in your Berry Pouch, you can check your inventory and find out that it magically appeared!
What is the Berry Pouch?
The Berry Pouch is simply a pouch in your bag where all of your Berries are held. So it doesn’t have any special effects other than helping to organize your bag.
Berries that you pick up in FR/LG will automatically go to your Berry Pouch. You can access it via your Bag’s Key Items pocket anytime you want to use or give a Berry to one of your Pokémon.