Birthday cake is a cake that is served to someone on his birthday. Birthday cakes are usually decorated with someone's name and carry a happy message. Candles are equal to the number of years someone has lived also placed on the cake. There is also a tradition to put one extra candle to bring good luck. Birthday cakes are usually sponges and the most popular flavors in cakes are chocolate. The history of birthday cakes can be seen from ancient Greece that made honey bread in the shape of the moon and brought it to the temple of Artemin-Dewi Bulan. Some experts believe that the tradition of tart cake began in Germany in the middle of the century.
Here are some examples of birthday cake designs, hopefully useful.