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3D printing has been around for a while. But as the technology improves, people have pushed the boundaries of what it can achieve. Now researchers at Colombia University in the US have produced a seven-ingredient vegan cheesecake assembled and cooked entirely by a 3D-printing machine. Jonathan Blutinger was one of the engineers involved in the project. (Picture: Strawberry frosting being deposited onto a layer of graham cracker paste as part of a seven-ingredient printed dessert Credit: PA)