The three pure elements in your horoscope means that there are 3 of the five elements with the same yin and yang, or it means that the earth branch in your horoscope has pure water, pure wood, and pure gold. The god of food refers to the five elements of the same yin and yang that are born from the heavenly stem of the day you were born. If the Heavenly Stem is Jiamu on the day you were born, then the God of Cookery is Binghuo in the Heavenly Stem and Human Element, and is Wuhuo in the Earthly Branches.