When Alexis Navarette's parents came to the United States from El Salvador, they did what so many immigrants from all around the world have done to survive, they opened a restaurant. Decades later, La Flor Blanca Salvadoreña is still standing, even as the neighborhood around it has changed. In fact, it's a South LA institution, attracting countless pupusa lovers. Now that Alexis is running the show, he's navigating the challenge of staying true to the restaurant's roots while appealing to a new generation. La Flor Blanca Salvadoreña is the focus of this week's “In the Weeds.”