Complex sentence: Traditional food refers to foods consumed over the long-term duration of civilization through generations, and foods and dishes that are traditional or have a historic precedent in a national dish, regional cuisine or local cuisine.
Split into simpler sentences: Traditional food refers to foods and dishes that are passed through generations and also refers to foods consumed over the long-term duration of civilization that has been passed through generations. Traditional foods and dishes are traditional, and may have a historic precedent in a national dish, regional cuisine or local cuisine.