Ah yes, the "Survival Tie". I am sure I saw a reference to that in the emergency manual.
Ingredients:
1 "Seasoned" uniform tie.(note: SO ties are known to be enormously rich in food residue).
1 Bowl of hot water, perhaps heated from the burning wreckage.
1 Crash axe. To keep the damn passengers away.
1. Pair of undies. (for filtering).
Combine and season to taste.
I think however you have grossly overestimated the nutritional value of any tie used to make "survival soup." Remember, this is the remnants of crew meals we are talking about here.