Step 1

In a large saucepan, combine the oil and the chiles and cook over moderate heat, stirring frequently, until fragrant and the chiles are browned in spots, about 7 minutes. Remove from the heat and stir in both garlics along with the vinegar, sugar, cumin and 1 teaspoon of salt. Cover and let cool.

Step 2

Transfer the chile mixture to a blender and pulse until a coarse paste forms. Season with salt.