Make caramel from the sugar. Once it melts and becomes caramel, add a little water, then add the chopped garlic and chopped chilies. Sauté briefly until the raw chili smell disappears and the garlic is fragrant.

Add sesame oil, ketchup, chili sauce, and salt. Stir until well combined, then add the remaining water. Bring to a boil, add vinegar, and adjust the taste.

Once the taste is right, add the cornstarch solution. Stir until well combined, adjust the taste again, and it's ready to serve.

Can be stored in a jar or container for longer shelf life. Keep in the refrigerator.