For the tomato chili sauce, soak the chili pepper in apple cider vinegar for a day at room temperature and let it steep, then finely chop the chili pepper and onion.
Score the tomatoes crosswise and put them in boiling water for a few minutes, then quench with ice-cold water. This makes it easy to peel off the skin.
Bring the chili, tomatoes, onion, garlic and the remaining vinegar to a boil in a saucepan. Season with sugar, salt, pepper and cumin and simmer for about 30 minutes.
Then blend with a blender until the tomato-chili sauce reaches the desired consistency.
Preparation Tip:
Refine the tomato chili sauce with fresh chopped herbs to taste.