French term (edited): pomme fruit

Yes, as you say, it is just to differentiate it from 'pomme (de terre)' — however, it isn't necessary — or desirable — to do so in EN, where no ambiguity exists.

Note also:
pomme à couteau = dessert apple, eating apple, "eater"
pomme verte = cooking apple (not strictly speaking, just a bit more acidic than a dessert apple, but in practice, in most cases it amounts to the same thing) — if not being cooked, then 'tart apple' will often do.

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Note added at 1 heure (2017-06-06 06:52:07 GMT)
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Also like mrrafe, I would expect the whole dish to be probably curried — could even be some kind of curry mayonnaise...

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Note added at 5 heures (2017-06-06 10:07:46 GMT)
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Paradoxically, menu writers do often specify 'pomme fruit', as W/A points out, even when used alongside 'pomme de terre' (in full).

I think there is a tendency to always want to complete an expression, so as not to leave one poor little word all on its own; cf. 'croissant au beurre' vs. 'croissant pâtissier' (= croissant not made with butter, i.e. margarine!!) — when I asked the baker why she didn't call it simply a 'croissant', or a 'croissant au margarine', she just shrugged in that Gallic way!