2 cans whole tomatoes
1 jalapeno pepper
1 serrano pepper
half a bunch of cilantro
1 small onion
salt

Chop onion, peppers (be careful with the peppers, wash your hands afterwards), and cilantro. Put them in a food processor and process until they are to the consistency you want - should be fairly fine. Heat tomatoes in a sauce pot over medium-high heat to a slow boil. Add hot tomatoes to the processor. Add a dash of salt (to taste). Process all ingredients until mixed and the tomatoes are in a juice-like consistency. Cool and serve.