Heat the olive oil in a medium-sized saucepan over medium heat. Add the chopped onion and minced garlic and cook until the onion is translucent, about 5 minutes.

Stir in the cumin, coriander, chili powder, smoked paprika, cayenne pepper, and salt. Cook for an additional minute, stirring frequently, until the spices are fragrant.

Add the tomato sauce, apple cider vinegar, and tomato paste to the saucepan. Bring the mixture to a boil, then reduce the heat to low and simmer for 20 minutes, stirring occasionally.

Remove the saucepan from the heat and let the chili sauce cool slightly.