Pour boiling water over the chili peppers and leave to soak for 1 hour. Then remove the seeds and cut the pods into rings. Peel the garlic and roughly cut the cloves. Put the chilli, garlic cloves, salt, cumin, paprika powder, saffron powder and 50 ml vinegar in the blender or work with the blender until you have a homogeneous (uniform) mixture.
Then pour in the oil while continuing to mix. Top up with more vinegar to taste.
Ideal for meat dishes and potatoes, especially for the Canarian wrinkled potatoes (papas arrugadas).