Is apple usually spelt as リンゴ in a culinary context?


I came across the sentence

> あなたは1つのリンゴを食べます

on the English for Japanese speakers duolingo course. (I'm mainly doing it as
dogfooding before suggesting it to a Japanese speaker learning English)

Is it normal in a context of talking about a foodstuff to use the katakana
form?

Jisho.org doesn't indicate whether to use hiragana or katakana, and Wiktionary
says

> As with many terms that name organisms, this term is often spelled in
> katakana in biological contexts, as リンゴ.

Which I assume doesn't apply here. The Japanese edition of Wikipedia uses
katakana, but it talks about it at least partially in a biological context.




Katakana tends to be used for any words that is a 品種(kind/type).  
Like animals, vegetables or fruits.

Also, it is mostly(but not exclusively) used for words like 林檎 where the kanji
is too hard to read for some people. Writing them in katakana is useful to
make it easier to read by delimiting the beginning and ending of the words
which is usually done by kanji.

Here is a list of common examples :

> 米→コメ  
>  麦→ムギ  
>  苺→イチゴ  
>  鳥肉→トリ肉  
>  豚肉→ブタ肉  
>  茄子→ナス  
>  猫→ネコ  
>  犬→イヌ  
>  駝鳥→ダチョウ  
>  甲虫→カブトムシ  
>  蜘蛛→クモ

