Researchers have developed a new bioprinting technology to create complex structures of Wagyu meat, improving on existing methods that use disorganized muscle fiber cells. By using individual fibers containing muscle, fat, or blood vessels, they have been able to fabricate the meat using 3D printing, arranging the fibers to mimic the structure of real Wagyu meat. This breakthrough could allow for subtle adjustments to the fat and muscle components, potentially reproducing the intricate textures and qualities of traditional beef.