For a mild sauce, remove the jalapeno seeds and white membranes before roasting. For a hotter version, leave them in or substitute one jalapeno with a serrano.
• Roast until the jalapenos and onion are blistered and lightly charred, not blackened. Light char adds flavor without bitterness.
• Blend at least 30 to 60 seconds to fully emulsify the oil. This creates the signature creamy texture without dairy or avocado.
• Add water slowly, 1 tablespoon at a time, until the sauce is smooth and pourable.
• If the sauce separates after storing, simply reblend for 20 to 30 seconds to restore its creamy consistency.
• Flavor deepens after chilling. For best results, make a few hours ahead or the day before serving.
