2Add the chiles, garlic, sesame seeds, and salt to a pan or metal bowl. Pour in the hot oil and allow to completely cool.
3Once the oil has cooled, add all remaining ingredients except the butter to a blender or use a hand blender to gently pulse. The mixture should be coarse.
4Pour the blended mixture into a bowl and add in the butter. Mix until well combined. Cover and refrigerate to allow the butter to set.