Plant-based meat substitutes have come a long way since frozen veggie patties with big chunks of carrots and sharpie grill marks. Now, companies like Impossible Foods are making plant-based burgers that look, smell, taste and bleed like real meat. In this Lab, Titi and Zakiya learn about what new ingredients are making these burgers more like real meat, and the scientific process of mass producing those ingredients using biology, genetics, and engineering. Guest: Dr. Christina Agapakis.

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