Translation:She does not eat the ingredient in the bread.
She does not eat the ingredient in the bread, she eats it outside the bread; what she was doing in the bread in the first place we don't know.
Issues with the English phrase aside, does any fluent or native speaker of Italian wish to comment on whether the Italian phrase is a fairly normal way to say that a person is avoiding a particular food (bread) because of one of the ingredients?
I'm presuming it does indicate that. But I'm also presuming that it is not a strong enough sentence to warn someone about an allergy, and that it is ambiguous enough that it is very possible that it would be interpreted only as a dislike of one of the ingredients.
Currently, I am simply accepting this as a training sentence, and moving on.
It is one of those nouns that doesn't follow the usual rules of masculine ending in "o" and feminine ending in "a". A few nouns end in "e" and are sometimes masculine, sometimes feminine. You have to memorize them.
"ingrediente" is masculine singular; "the ingredient" is "l'ingrediente".
It's plural is "ingredienti"; "the ingredients" is "gli ingredienti". Hope that helps. https://quizlet.com/68562074/italian-nouns-ending-in-e-flash-cards/ and http://www.effectivelanguagelearning.com/free-language-lessons/italian/grammar/nouns
I am absolutely certain that the Duolingo voice says a "la" sound after "nel" and before "pane". Please check this yourself with slow listen (turtle button) mode. I'm dead certain of this. It really threw me off because I knew "pane" was masculine and that it should be "nel". Note, I did report the problem.
Not strange at all -- people who have celiac disease cannot eat breads containing gluten, artisanal breads may have herbs or other ingredients baked in that some people don't like, some breads have ingredients some people are allergic to, like dairy, soy, eggs, nuts -- in fact, for people with nut allergies, this is critical language to learn because they could go into anaphylactic shock if they were to consume nuts