Originally Posted by
GalleyWench
Can't speak for Delta specifically, but the infant meals I've seen on transatlantic flights have been for lap children and consist of jarred baby food. The kids meals are more geared towards toddlers and older kids that are actually occupying a seat, and they have consisted of "kid fare", chicken tenders, hamburgers, hot dogs, peanut butter and jelly, etc.
I fly Delta a lot and have never ordered or even seen the infant or child meal served. The menu options GalleyWench listed confirms my fears about what those meals likely consist of--the rather typical kid menu items that are ubiquitous rather than thoughtful. My two-year-old is generally fine with the regular meal.
Sounds like the best bet is to ask when you call to reserve the meal.