unfortunately, this is true for CO....Hindu meal might contain white meat or seafood.
However, Hindu meals are always vegetarian when flying out of EWR (its Indian food whenever I have requested it).
So, on the return legs, I always order the "vegetarian" meal.....instead of "hindu" meal.
I have called CO and talked about it. they say that certain meats are "not suggested" to be in Hindu meals, but are "not prohibited" either....
Pork / Beef will be the "prohibited" items.