Chipped Pot

A peculiar teapot that can make a certain species of Pokémon evolve. It may be chipped, but tea poured from it is delicious.

You can find a Chipped Pot just outside Port Marinada.
You can find both Cracked Pots and Chipped Pots as a possible item for sale at the Port Marinada Auction House once you’ve completed the Water Gym Test there. You can expect to pay 15,000+ for each.

Chipped Pots are needed to evolve Sinistea into Polteageist, so long as it’s in its Antique Form. If it’s in its Normal Form, you will need a Cracked Pot instead.