Home-canned mushrooms are delicious. Tinned mushrooms from the store are metallic tasting and rubbery-textured in comparison.
But home-canned are really a gourmet-level product to have on hand. They really do taste fresh and pure mushroomy.
Note these are plain mushrooms to be used as an ingredient in cooking, as opposed to pickled or marinated mushrooms.
Find this recipe here: http://www.healthycanning.com/canning-mushrooms/