from Bon Appétit, May 2008
12 ounces tomatoes (about 2 medium), cut into 1/4-inch cubes
1 medium white onion (about 7 ounces), cut into 1/4-inch cubes
2 to 8 serrano or jalapeño chiles, chopped
1/4 cup chopped fresh cilantro
3 tablespoons fresh lime juice
Coarse kosher salt
1. Combine first 5 ingredients in medium bowl. Season to taste with coarse salt.
DO AHEAD: Can be made 2 hours ahead. Let stand at room temperature.