Answer:
My first is in fish but no in snail. My second is in rabbit but no in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
Through its wounds, water does run. It once held many but now has none. What is it?
Hard to catch, easy to hold. Can't be seen, unless it's cold
What is often returned, but never borrowed/
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.