2 cups diced (1/2 inch) tomato
1/4 cup finely diced jalapeño or serrano chile pepper (more or less depending on your tolerance)
1/3 cup coarsely chopped onion, put in a sieve, rinsed under cold tap water and pat dry
1/3 cup coarsely chopped fresh cilantro
1 tablespoon finely chopped garlic
1/2 teaspoon salt
2 tablespoons fresh lime juice
3 tablespoons ketchup
2 tablespoons water