灶君
People in Song Dynasty started using Zaotang as a sacrifice to the Kitchen God to sweeten his words so that he wouldn't say bad things to the Jade Emperor. Some people also say that when Zaotang melts, it becomes sticky and stick the Kitchen God's teeth so that he is unable to talk when reporting to the Jade Emperor. Up till now, people in China still keep this tradition and produce Zaotang every year around the Kitchen God Festival.