Food is often used as a metaphor for other needs.
The song used sunshine as a metaphor for joy.
Her writing was filled with rich, creative metaphors; she described teachers as fire-breathing dragons, the books on the shelves as vibrant butterflies and the other students as slime-trailing snails.
A metaphor can be contained in a single sentence or it can be used as an underlying device throughout an entire story.
The novelist's use of both similes and metaphors in her writing brought her scenes to life.
Her art uses metaphor and allegory as a subtle way to introduce difficult topics.
"The world is your oyster" is a paraphrase of a metaphor first used by William Shakespeare.