Thai sweet chili sauce is known as nam chim kai in Thai. It’s commonly made with red chili peppers (Fresno chile, Thai, or red jalapeños), rice wine vinegar, garlic, fish sauce, and sugar. You can find the commercial variety at Asian grocery stores and big supermarkets. Wish to learn more about Japanese cooking? Sign up for our free newsletter to receive cooking tips & recipe updates! And stay in touch with me on Facebook, Pinterest, YouTube, and Instagram.