From the moment Pupusas Sabor Hispano opened five years ago in a dilapidated roadside shack in north Boulder, the citizens of the People's Republic clamored for more. They clamored so hard, in fact, that last fall owner Nancy Reed shuttered the original Pupusas and relocated to a bigger, more contemporary spot across the street. But while the new space is larger and loftier, the pupusas — orbs of masa stuffed with everything from fiddlehead ferns and Anaheim chiles to chicharrones, beans, rajas, zucchini and molten cheeses — remain as humble and delicious as ever. They're served with curtido, the tart and fiery slaw that's a pupusa's proverbial sidekick; if you want to take a ride on the wild side, you can dress them up from the well of flavor-bombed, fire-jolted salsas.