Poffin House
From Bulbapedia, the community-driven Pokémon encyclopedia.
The Poffin House is a house in Hearthome City where you can make Poffin. Poffins are the replacement of Pokéblocks from Ruby, Sapphire, and Emerald. Speak to the lady a little to the left of the entrance and you will throw in a berry and stir the liquid.
