Never eat these mushrooms raw. Also, a few people have an allergy to this mushroom even after cooking, so eat only a little the first time and wait at least a day before eating more. The most convenient way to preserve morels is to cut each in half and dry. They can be threaded on a string to air dry and later stored in a sealed fruit jar. Dried morels are reduced to about one tenth of their fresh weight and will store for long periods of time if completely dry.
Some people add a bay leaf to each sealed jar.
Larger quantities can be processed more quickly by parboiling whole morels to stop the enzyme action and sealing them in bags or jars for freezing. These mushrooms can then be stuffed and baked later. Whole mushrooms will not keep over long periods without deterioration and should be used within a year. The world's cork production comes from a regenerative layer, the cambium, of the oak tree known as Quercus suber . These cork boards are then left outside approximately 6 months to season.