Yesterday, Steve Connor at the Independent wrote:

A week tomorrow, at an exclusive west London venue, the most expensive beefburger in history will be nervously cooked and served before an invited audience. Costing somewhere in the region of £250,000, the 5oz burger will be composed of synthetic meat, grown in a laboratory from the stem cells of a slaughtered cow.
The precious patty will be made of some 3,000 strips of artificial beef, each the size of a rice grain, grown from bovine stem cells cultured in the laboratory. Scientists believe the public demonstration will be "proof of principle", possibly leading to artificial meat being sold in supermarkets within five to 10 years

One funny thing about very rich people is that they eventually get to the point where they'll happily pay absurd amounts of money to be guinea pigs.