Pebre Sauce

Name: Pebre Sauce
Prep time: 20 min
Total time: 20 min
Cuisine: American, Mexican, Latin American
Ingredients: 1/4 onion chopped very small (white or yellow onion); 1 bunch cilantro or 2 cups cilantro leaves; 1-2 tomatoes; 1 tablespoon red wine vinegar; 1 tablespoon oil; 1/2 teaspoon red chili sauce, like Tabasco; salt