Ice-cream cake? (6)

I believe the answer is:

eclair

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'cream cake?' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for eclair that I've seen before include "comedian Jenny?" , "Dainty" , "Lacier (anag.)" , "Choux pastry cream cake" , "Long affair with pastry, chocolate and cream?" .)

I've seen this clue in The Irish News.

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