Raw Red Sauce

Ingredients

• 2 red tomatoes, peeled and finely diced (Fresh tomatoes are better; in emergencies 4 canned tomatoes may be used)
• 2 green chiles serranos, cored, seeded, and finely minced
• 1 tablespoon chopped fresh cilantro
• 1 medium onion, finely diced
• 2 teaspoons vegetable oil
• 1/4 teaspoon half salt, half salt-substitute mixture