Asparagus can be quite tricky to preserve without it turning into mush. Freezing does not seem to work very well as the stalks always seem to break down once thawed.
One can certainly pickle them, and we do but we want to preserve the flavor of the asparagus as close to fresh as we can. So far, we have not succeeded.
However, this soup does retain a good asparagus flavor and it is definitely tasty and filling! It is creamy soup but don't add the dairy until you serve as dairy does not preserve well.
25lbs of washed asparagus (double batch).
4 large onions.
Chop the onions and add to pot with a couple of cups of water.
Break off the buds.
Add the asparagus stalks and broth to the pot.
Strain the stalks from the broth.
Purée the stalks. Back into the broth, heat and season.
Add the buds to the jars and fill.
Wipe, lid and ring, and into the pressure canner.
Out of the canner and let them cool overnight.