Duffy uses the metaphor of an onion to describe the complexity of love in her poem 'Valentine'. "Not a red rose or a satin heart. I give you an onion." On the face of it, Carol Ann Duffy’s ...

For example, in the poem Valentine by Carol Ann Duffy, the speaker says 'I give you an onion.' The onion is a metaphor for the speaker's love: 'It will blind you with tears like a lover.' ...