Salsa Roja - Mexican Table sauce - I camp in my kitchen

This is the first recipe i made for the Latin american cuisine, a simple recipe of salsa. Salsa is spanish term for sauces. Salsa roja, also called as mexican table sauce, is a basic sauce with tomatoes, onion, chilies, garlic and cilantro. The same sauce can be prepared in different ways by roasting the ingredients or by grilling it. This recipe is from here. A simple recipe, just boil and blend the ingredients and you have a delicious sauce ready in an hour.

Ingredients
3 plump red tomatoes, (see notes)
1 medium white onion
1 serrano/jalapeno or any hot pepper (i didnt have both, so used indian green chili,hot variety)
2 cloves of garlic
5-6 stalks of fresh coriander
2 cups of water
½ teaspoon salt or to taste
1 tablespoon cooking oil

Method

Wash tomatoes well. Chop tomatoes and onion roughly. Take the chopped tomatoes, onions, garlic, chili in a saucepan, add water and salt to it. Let it boil and simmer for 15 minutes.

Take it off the stove, let it cool completely. Add cilantro to this and puree smooth.
Now in the same sauce pan, add oil, when it is hot, add the pureed sauce to it and let it simmer for another 15 minutes. Check the taste and adjust salt, if necessary.
Take it off the stove, let it cool completely. Store it in bottles and refrigerate until use.