Question

I mostly skiped through everything so I could get giratina how do you

Answer 1

There is a house in hearthome city and you can cook poffins there

Answer 2

In the south of Pokemon Center in HeartHome City, there is a poffin house. Just talk to the old man in there and follow the instruction... more info
http://www.rarityguide.com/articles/articles/104/1/Pokemon-Berry-and-Poffin-Guide/Page1.html

Comments

Or this for all berry
http://www.serebii.net/berrydex-dp/