Sponge cake in Saigon - Bánh bông lan

I have no idea how it comes - the Vietnamese name for "sponge cake", and it's really a beautiful name for this popular, light and soft and spongy cake - we call it "bông lan". It's literally means "flower - orchid", word by word! Actually the name itself sounds also really light as a feather!

             A familiar image of sponge cake vendor in Đồng Khởi street.