Fruit dessert makers taking a Viennetta's wrapping (5)

I believe the answer is:

guava

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'fruit' is the definition.
(guava is a kind of fruit)

I can't explain the rest of the clue.

(Other definitions for guava that I've seen before include "Pear-shaped tropical fruit" , "Fruit from South America" , "Large cask; tube" , "Tropical shrub bearing small yellowish fruit" , "Pale orange tropical fruit" .)

I've seen this clue in The Independent.

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