In this handout picture received via Ogilvy PR, Professor from Maastricht University Mark Post holds the world’s first lab-grown beef burger as Professor Mark Post of Maastricht University (R) speaks to him in London on August 5, 2013. Scientists unveiled the world’s first lab-grown beef burger in London, frying it in a little oil and butter and serving it to volunteers in what they hope is the start of a food revolution. The tasters pronounced the 140-gramme (about five-ounce) patty, developed at a cost of more than 250,000 euros ($330,000) with support from Google co-founder Sergey Brin, as «close to meat» in flavour and texture but not as juicy. RESTRICTED TO EDITORIAL USE — MANDATORY CREDIT » AFP PHOTO / PRESS ASSOCIATION/DAVID PARRY» — NO MARKETING NO ADVERTISING CAMPAIGNS — DISTRIBUTED AS A SERVICE TO CLIENTSHO/AFP/Getty Images ORG XMIT: 1328