Greek cuisine has a long tradition and its flavours change with the season and its geography. It has influences from the different people's cuisine the Greeks have interacted with over the centuries, as evidenced by several types of sweets and cooked foods. It was Archestratos in 320 B.C. who wrote the first cookbook in history. Greece has a culinary tradition of some 4,000 years. Ancient Greek cuisine was characterized by its frugality and was founded on the "Mediterranean triad": wheat, olive oil, and wine, with meat being rarely eaten and fish being more common.