＠sasazuka,tokyo / bottom：nagasaki - castella
Castella is a popular Japanese sponge cake made of sugar, flour, eggs, and starch syrup, very common at festivals and as a street food.Now a specialty of Nagasaki, the cake was brought by way of Portuguese merchants in the 16th century. The name is derived from Portuguese Pão de Castela, meaning "bread from Castile". / wikipedia
