Big balls.

[Douger]

[ame=http://www.youtube.com/watch?v=s0sX-MFGxbw]Elba`s Rellenos De Papa-Stuffed Potato Balls Recipe - YouTube[/ame]

 

[Douger]

You'll need this info as well.
[ame=http://www.youtube.com/watch?v=Ul56h88blSM]How to make a Potato Barrel for growing 40+ lbs of potatoes in a small space - YouTube[/ame]

 

[Douger]

This guy is good
[ame=http://www.youtube.com/watch?v=ldutHSjqQCo&feature=related]Backyard Barrel Gardening - YouTube[/ame]