You get a cannon, then take out the bullets, then replace them with strawberries.
Now that's what I call a recipe for world peace.
Just to enlighten you, the cannon at left shoots icing; the one on top shoots sugar; the one at right shoots strawberries; and the one at bottom shoots butter. The finished product comes out at the lower left corner. He was conscientious enough to draw two legs for the machine to stand. And of course don't forget the remote control!
He even drew instructions on how to set up the machine:
On my birthday, he wants me to make a strawberry-flavored cake using this diagram. Piece of cake, huh?