Answer:
I'm a ring of sliced onion dipped in batter and then deep fried.
The Black Pearl was this type of criminal seafaring vessel
I am always hungry, I must always be fed. The finger I lick will soon turn red.
What do you call a witch that lives in the sand?
People in love are often bound to this.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.