Fresh Salsa (Pico de Gallo)

Name: Fresh Salsa (Pico de Gallo)
Prep time: 15 min
Total time: 15 min
Cuisine: Mexican
Ingredients: 2 to 3 medium-sized fresh tomatoes (1 to 1 1/2 pounds), stems removed; 1/2 red onion; 2 serrano or 1 jalapeño pepper, stems, ribs, and seeds removed (less or more to taste); Juice of 1 lime; 1/2 cup chopped cilantro; Salt and pepper to taste; Pinch dried oregano (crumble in your fingers before adding), or more to taste; Pinch ground cumin, or more to taste