Mamaghani, co-founder of meat alternative company Genuine Taste, said they harvested cells from an anesthetized cow (who woke up afterwards) and now grow animal fat cells in a lab. Cultivated fat, he stressed, is “real animal fat without slaughtering animals.” “We took a few stem cells from an animal and grow (them) in a bioreactor and end up with the same composition of real animal fat to enhance taste, texture, and flavour of alternative meat products,” he said, speaking from Montreal.

Source: Animal fats could soon be in plant-based meats — but not how you think – National | Globalnews.ca