Famous in Taiwan - In an island easily conquered by food fads including Japanese octopus balls and doughnuts, one of the first items that became hot in demand in Taiwan were Portuguese egg tarts. In 1997, the island developed an obsession with the egg tarts, establishing hundreds of shops selling egg tarts, only to close down in a matter of months after the trend died down.

　　（来源：CNN官网，地址为http://edition.cnn.com/2015/04/06/asia/food-frenzy/index.html）

　　其实已经很清楚了，“蛋挞”对应的英文是

　　egg tart

　　它是一个可数名词，复数为egg tarts。其中的“挞”，就是tart的音译，我们常说的“葡式蛋挞”就是Portuguese egg tart。

　　以下资料供大家参考：

　　The egg tart or egg custard tart (commonly romanized as dàn tà (Mandarin), dan that or dan tat) is a kind of custard tart found in Hong Kong, Portugal, England, and various Asian countries, which consists of an outer pastry crust that is filled with egg custard and baked.