realistic proportions

Let's pretend someone creates a teleportation system.  Let's say in this pretend world I wanted to teleport a pizza to my location.  There would have to be a place to teleport the pizza from.  So anyhow I'm trying to get a sober look at a pretend world and it is taking on many levels trying to get a visual here.  So maybe I would need a teleportation recipe for pizza like put in the proportions of the size pizza I want.  And somewhere along the way there would need to be an oven.