Burger King is less than a month into testing their new plant-based Impossible Whopper. It's gone so well, apparently, that they've already decided to begin revealing plans to bring the vegan meat patty to all of their locations nationwide.

Photo courtesy of Burger King

While Burger King has yet to reveal any numbers in regards to the test, they did note that the Impossible Whoppers are doing "exceedingly well" in a statement. "Burger King Restaurants in St Louis are showing encouraging results and Impossible Whopper sales are complementing traditional Whopper purchases," it reads, confirming plans to extend the test to other markets in the near future. By the end of 2019, Burger King hopes to have completed a nationwide rollout of the plant-based meat.

This rollout would be the largest yet for Impossible Foods, who currently has its "bleeding" burger substitute available in over 5,000 locations globally. Adding Burger King's US locations to that list effectively doubles it, as the chain has over 6,000 locations nationwide.