What in the world is a Mysterious Potato

[Emblin]

Simply Jetpacks adds the item "Mysterious Potato" and google has given me no answers. I'm dying to know

 

[ICountFrom0]

I've never seen one show as loot anywhere, it has no crafting recipe.

Use creative to get one and then while your in there, grab a zombie spawner.

Slap down the spawner, use the potato on the spawner and then make it night time.

Zombies with potato jetpacks ... WHEE... BOOM!