In the centuries following the introduction of Buddhism to Japan in the 6th century, laws and imperial edicts gradually eliminated the eating of almost all flesh of animals and fowl. The vegetarian style of cooking known as shojin ryori was later popularized by the Zen sect, and by the 15th century many of the foods and food ingredients eaten by Japanese today had already made their debut, for example, soy sauce (shoyu), miso, tofu, and other products made from soybeans. Around the same time, a formal and elaborate style of banquet cooking developed that was derived from the cuisine of the court aristocracy. Known as honzen ryori, it is one of the three basic styles of Japanese cooking along with chakaiseki ryori (the cuisine of the tea ceremony meal) and kaiseki ryori.