EV Erasing Berries
If for some reason you need to undo your EV training, you can use six special berries that reduce your Pokemon's EVs by 10 per usage. They are as follows:
- Pomeg Berry - Removes 10 HP EVs
- Kelpsy Berry - Removes 10 Strength EVs
- Qualot Berry - Removes 10 Defense EVs
- Hondew Berry - Removes 10 Special Attack EVs
- Grepa Berry - Removes 10 Special Defense EVs
- Tamato Berry - Removes 10 Speed EVs
Also, if your Pokemon has over 100 EVs already invested, consuming one of these berries will drop you down to 100 EVs exactly, regardless of how many you already had! So to completely erase your invested EVs, you need 11 Berries.
Unlike previous generations, acquiring these berries is not easy in-game, as you have no way of growing berries in-game. The only easy way you can acquire them is through the Dream World. If you don't have the ability to connect to the Dream World, then you will need to be
very careful about your EV training!