Place the chiles, garlic, ground coriander, cumin, salt mint and cilantro into a blender or food processor. If the mixture is too dry, add a bit of the olive oil. Store in a bowl or jar in the refrigerator with the remaining oil poured in a layer over the top.
Make sure that the surface is covered with a layer of oil each time you use some. When you run out of Harissa you can use the oil to add flavor to fried or baked dishes.
