Prepare Ingredients: Start by finely chopping the Datil peppers, onion, and mincing the garlic. Be sure to wear gloves to avoid burning your hands.
Sauté Base: In a saucepan over medium heat, sauté the onions and garlic until translucent.
Add Peppers: Introduce the Datil peppers to the pan and cook for another 2-3 minutes, stirring frequently.
Combine Ingredients: Add the tomato sauce, apple cider vinegar, honey, mustard, and lemon juice. Stir well to combine all the ingredients.
Season: Sprinkle in the salt and pepper, adjusting the seasoning to taste.
Simmer: Let the sauce simmer on low heat for about 20-25 minutes, or until it thickens.
Blend: Carefully transfer the sauce to a blender or food processor and blend until smooth.
Bottle: Pour the blended sauce into sterilized jars. Seal and store in the refrigerator or process for longer shelf life.