Created by ellie on February 12, 2015
Step 1: In a skillet over high heat toast the chiles, turning often until fragrant (3-5 minutes). Let cool slightly and then remove stems and seeds.
Step 2: In a saucepan place the chiles, onion, garlic, salt and 1 1/2 cups water; bring to a boil. Reduce heat and simmer for 15-20 minutes. Puree mixture in a blender until smooth.
Step 3: Strain mixture and mix in vinegar.
Step 4: ***Can be made 4 days ahead, cover and chill.