>> 2) Try a very small amount and wait about 1/2 hour to see if you are feeling uncomfortable.

That's VERY RISKY!!! Kids, don't try that at home!!!

For example:

Amanita phalloides (German: "Grüner Knollenblätterpilz", English "Death cap"(?)), the most toxic mushroom here, is highly toxic.
It takes only 35g (1 1/4 ounce) of this mushroom for a 70kg (~ 150pounds) person to be deadly.

First symptoms show about 8 to 12 hours after eating it!
By then, it is too late for taking anti-toxin.
All that might help then is a liver transplant within a few days (10 days is the typical time till death ...)


Other toxic mushrooms (Amanita pantherina "Pantherpilz"/"panther cap", Amanita muscaria "Fliegenpilz"/"fly agaric") also show symptoms much later than 30 minutes.