A luau is a traditional Hawaiian party or feast that is usually accompanied by entertainment. It often features Native Hawaiian cuisine with foods such as poi, kālua puaʻa (kālua pig), poke, lomi salmon, lomi oio, ʻopihi, and haupia, and accompanied with beer and entertainment such as traditional Hawaiian music, kanikapila, and hula. The concepts of "lūʻau" and "party" are often blended, resulting in graduation lūʻau, wedding lūʻau, baby lūʻau, and birthday lūʻau. The term "luau" comes from the young edible taro leaves that are traditionally used to wrap the food prior to being placed in the imu (underground oven) . The first feast in Hawaiʻi resembling a modern-day lūʻau was probably held in 1819, and before then, the kapu system of restrictions, religion, and resource management separated men and women at mealtimes, even in times of celebration. Today, a traditional luau is often used by family and friends to celebrate a baby’s first birthday, or as an important way to raise funds by churches and social groups. Luaus have always been a social, cultural, spiritual, and entertainment manifestation in which all guests wear a classic Hawaiian lei.