Let me state a disclaimer: I DO NOT like Asparagus
It should be classified as a biological weapon, to be issued only to those licensed to wield it.
That being said, it can be calories (food value) and proper preparation (pun intended) is necessary in the method used to create your
weapons canned Asparagus.
This article gives a very good
training exercise recipe for harvesting and storing this
dangerous barely edible vegetable.
http://www.backtoourroots.net/canning-asparagus/If you like Asparagus, you may have all of my share. As Henny Youngman might have said: "Take my Asparagus, Please!"
Remember, Asparagus can break your OPSEC! Think About It...