--
Hair is a protein mostly keratin
Keratin refers to a family of fibrous structural proteins. Keratin is the key of structural material making up the outer layer of human skin. It is also the key structural component of hair and nails.
There's nothing special about it as a protein, so as long as it doesn't wrap around your tonsils and get stuck in your throat, or contain dyes, hairspray etc. it's safe to eat.
However, the long stringy nature of the stuff can cause problems if you eat too much of it.
I've looked through a number of recipes, and the vast majority of them indicate that you should cook the morels thoroughly (preferably in butter) first, before using them as a pizza topping or in an omelet.
I did find at least one recipe for a morel omelet that did not call for pre-cooking the mushrooms, however.
I must admit that I did my research a bit late, as I had already decided to risk it and made an omelet with morels, as I had not yet received any answers to my question.
I added the morels to the raw egg, rather than putting them in as a last-minute filling just prior to folding the omelet, so they did cook a bit during the process. The result was actually quite delicious (I also used some fresh garlic, chives, and Gruyere cheese), and I did not become ill.
However, it does seem that some people react differently, and alcohol consumption can greatly enhance any negative reactions to wild mushrooms.
Given the information I found on the Internet (none of it terribly authoritative, as the vast majority of quality information was on small sites maintained by wild mushroom hunting clubs and enthusiasts), I would not repeat my omelet without pre-cooking the mushrooms, nor will I make pizza without pre-cooking them.
The consensus seems to be that they should be sauteed once until "thoroughly cooked". At least one site (amid heavy cautions) specifies that this is usually 8-10 minutes, although I suspect that this is for intact mushroom halves, rather than small pieces (morels should always be sliced lengthwise to ensure that you can remove all the insects from the hollow center).
It needs to be stressed that even with the proper cooking, it seems some people have strong reactions to wild mushrooms, so use caution and moderation when trying them for the first time, and do not try them with any form of alcohol until you are sure that you can eat them without problems.
Best Answer
Like with so many things in life, it’s a question of willingness to take a risk and of personal health and individual metabolism.
The general rule is that raw elderberries shouldn’t be consumed because they contain cyanogenic glycosides, i.e. substances that can be transformed into cyanide and ultimately cause cyanide poisoning. As with all plant-based substances, the content can and will vary a lot depending both on the specific strain of plant and the environmental conditions, including soil composition, water or rain and change significantly during the life cycle and ripening stages. For elderberries, the content of cyanogenic glycosides decreases significantly in fully ripe berries, some researcher1 found as little as 0.0054 mg hydrogen cyanide equivalent per gram of berries, which is roughly 0.0001 mg per berry. Considering that a healthy adult human can safety ingest 0.02 mg per kg of body weight, a few ripe berries should be harmless enough. This is the same reason why eating a few apple pips (containing amygdalin, also a cyanogenic glycoside) is harmless.
The numbers above should also explain why individual reports of toxic effects vary so widely, from no effects at all to severe digestive issues.
If you want to consume unheated elderberries, I recommend you chose fully ripe berries and limit the intake to just a few initially (see the numbers above and go way below the statistically safe threshold because individual tolerances may be lower). Note that this post is not an endorsement, it’s just to help you make an informed decision.
The drying process is the same as for other berries - ensure good ventilation and place them on a cloth or fine netting, because the berries are so small. If you want to use a dehydrator, you may have to cover the trays with cloth or mesh if the slats are too wide. Consult the manual for settings.
1
Petra Demmer: Kapillarelektrophoretische Untersuchungen an cyanogenen Glykosiden. Inaugural-Dissertation zur Erlangung des Doktorgrades der Naturwissenschaften im Fachbereich Chemie und Pharmazie der Mathematisch-Naturwissenschaftlichen Fakultät der Westfälischen Wilhelms-Universität Münster. Münster 2004, urn:nbn:de:hbz:6-28659388497.