The world's first test tube burger has been cooked and eaten at a news conference in London this lunchtime.
Two volunteer taste-testers have taken a bite from the controversial delicacy.
The meat was grown in a laboratory, from cattle stem cells.
Experts hope that making meat in labs could eventually help feed the world and fight climate change
The burger's been fried and served up before an audience in London this lunchtime.
Here's the reaction from the two taste-testers: