1 lb tomatoes, diced
1 small onion, finely diced
juice of 1 lime
2 serrano chilies (stems, ribs, seeds removed), finely diced
about 1/2 C fresh cilantro, chopped
Dice tomatoes & onions. Be very careful when cutting the chilies- use a fork and a knife, or, if you must touch it, guard your hand with gloves or a paper towel and wash with soap and water afterwards. Don't touch your eyes.
Combine tomatoes, onions, chilies, and cilantro, top with lime juice and toss. Let flavors combine in the refrigerator for at least an hour before serving. Makes about three cups. In my case, it was an appetizer for 10 with none left over (It lasted through a bag and a half of tortilla chips).