Pineapple cake is the most famous souvenir in Taiwan. Its sweet and sour taste not only captures the taste buds of Chinese people, but is also a must-buy native product for foreigners visiting Taiwan. According to legend, it first started in Taichung Bakery, and later flourished in Kaohsiung and Tainan, where pineapples are abundant, and it has a flourishing contending of hundreds of schools of thought today. However, although the preparation of pineapple cakes is similar, the proportion and variety of pineapple added to the filling will affect the change of taste.