well u make pokeblocks in contest like normal rate any contest ! hope this helps
you get it from your rivil
In Pokemon Ruby,Sapphire and Emerald after you make a pokeblock, you can check the pokeblock case and you give the desired Pokemon the pokeblock to help it do better in Pokemon contests. After you have received a pokeblock case and you made pokeblock at the berry blending machine go to your key items in your bag and scroll down to your pokeblock case then simply select the pokeblock you want to give your Pokemon.
Make sure you have a pokeblock case and go in any contest hall and look for the blenders. Press A and you can berry blend, it creates one pokeblock.
Pokeblock's are not in diamond instead there called poffin's, just like ruby, sapphire and emerald in the Pokemon contests you can create your own poffin using berries.
The Pokeblock Case can be obtained from the person behind the counter at the Lilicove Contest Hall.
pokeblock case
Increase Feebasse's beauty stat by a pokeblock.
you can get yourself a pokéblock case at the lilycove contest hall.
Two things. You can make Pokeblocks (At contests) or you can use it to enter the Safari Zone in Route 121 near Lillycove City.
Do that game almost perfectly with friends or the pokeblock master.
A little girl will give it to you in the slateport pokemon contest room
If you are playing on emerald, you can interact with any of the tables the npcs are sitting at to make a pokeblock!