As from CNN money:
As part of a project at Cornell University, a group of scientists and students built a 3D printer and began testing it out with food. The device attaches to a computer, which works as the "brain" behind the technology.
It doesn't look like a traditional printer; it's more like an industrial fabrication machine. Users load up the printer's syringes with raw food -- anything with a liquid consistency, like soft chocolate, will work. The ingredient-filled syringes will then "print" icing on a cupcake. Or it'll print something more novel (i.e., terrifying) -- like domes of turkey on a cutting board.
This is the link to the delicious video