Hanukkah, the Jewish "festival of lights," commemorates a story of a miracle, when oil meant to last for one day lasted for eight. Today, Jews light the menorah, a candelabra with eight candles—and one "helper" candle, called a shamas—to remember the Hanukkah oil, which kept the Jerusalem temple's everlasting lamp burning brightly. Each year, the holiday starts with just the shamas and one of the eight candles and ends, on the last night, with the entire menorah lit up.