"Because the health and happiness of astronauts is paramount, NASA granted contractor Systems & Materials Research $125,000 to develop a pizza printer. The prototype uses shelf-stable powdered food and oils, offering nutrition while minimizing garbage on board a space vehicle. It first prints a layer of dough onto a heated plate that bakes the dough and then lays down a tomato base that has been stored in powdered form and mixed with water and oil. Last comes a printed 'protein' layer."
— Bloomberg Businessweek associate editor Venessa Wong in an article about using 3-D printing technology with foods including chocolate, pasta, corn chips, candies and other items.