McDonald’s is expanding its test of the plant-based McPlant burger, created as part of its partnership with Beyond Meat.

Starting Feb. 14, the fast-food giant will roll out the burger at roughly 600 locations in the San Francisco Bay and Dallas-Fort Worth areas to learn more about consumer demand for the potential menu item. The test began in November with just eight restaurants, so the chain could get a sense of how the change would impact its operations.

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