This yummy goodness doesn't exactly have a recipe, I just start throwing things in.
5-6 tomatoes, quartered
1 onion, quartered
1 handful of cilantro
Can of diced green chilis or about 3 roasted chilis, diced
1 Tbsp lemon juice
Salt and pepper to taste
Put all in a food processor and it's done.
This stuff doesn't last long!