Bombay duck Mail (or Bombay "Daak") thus reeked of the fish smell and "You smell like the Bombay Daak" was a common term in use in the days of the British Raj. In Bombay, the local English speakers then called it so, but it was eventually corrupted into "Bombay duck". Nonetheless, the "Oxford English Dictionary" dates "Bombay duck" to at least 1850, two years before the first railroad in Bombay was constructed, making this explanation unlikely. According to local Bangladeshi stories, the term Bombay duck was first coined by Robert Clive, after he tasted a piece during his conquest of Bengal. He
What Love Is Made Of extremely positive about "What Love Is Made Of", describing it as "darker than anything" from "On a Mission", while calling it "slinky". The reviewer went on to commend the "irresistibly pouty" chorus. Pitchfork Media's Katherine St. Asaph commented that, in the song, the singer "sound[ed] completely enthralled, by either her lover or the music" and complimented her voice, noting that it seemed "ten times bigger than before". Jordan Sargent of "Spin" magazine called the track "exuberant" and highlighted Katy's vocal performance, which he deemed "typically fantastic", while the team from pop music website Popjustice gave "What Love Is Made Of"