Boil water on the stove or using an electric kettle. Add water, chiles, garlic, salt, sugar, oregano and cumin to a large bowl and cover. Soak for 30 minutes or until chiles are soft.
Add water, chiles, garlic, salt, sugar, oregano and cumin to the Instant Pot. Pressure cook for 8 minutes, let natural release for at least 5 minutes and then quick release if needed.
Transfer the sauce to a blender along with apple cider vinegar. Blend until smooth.
