One test-tube burger coming up. A team of researchers in the Netherlands is growing a test-tube hamburger patty that they expect will be finished in eight months, at a cost of £220,000 (or $350,000). “In October we are going to provide a proof of concept showing out of stem cells we can make a product that looks, feels, and hopefully tastes like meat,” said Prof. Mark Post at a conference Sunday. Post sees lab-grown meat as an efficient way of meeting the world’s growing demand for protein. Each donor animal would be able to produce a million times more meat than if it were simply butchered.