Place the arbol peppers, guajillo peppers, and garlic in a saucepan with the water. Turn the heat to high, and once the water starts boiling, turn the heat down and simmer for about 20 minutes, or until peppers are very soft. Due to the fumes, the peppers will give off, make sure your windows are open or turn on the exhaust fan.

Remove saucepan from heat and allow to drop to room temperature. Once it has cooled, place the peppers, garlic, spices, dried herbs, vinegar, and one cup of the cooking water into a blender. Puree until you have a very fine texture.

Pour this mixture into a glass container using a strainer, to remove any pieces of pepper skins left.

Pour the mixture into the saucepan again, turn to medium-high heat, and gently simmer for about 5 minutes. This is just enough time to reduce the salsa to the desired consistency and allow the spices’ flavors to blend. Again, don’t forget to have the windows open and/or the kitchen exhaust fan on.

Allow cooling. Pour the sauce into a sterilized bottle and secure with an airtight cap or lid.

You can use this sauce immediately, although the flavors will be better about two weeks later. This sauce can last stored in your refrigerator for about 6 months.