I vaguely remember that episode. Was it a morel mushroom or something else? I remember him trying out various types of foods that were not very tasty or bitter even.

I believe Ron Hood also had an episode "Solo Survival" or something like that we he believed he had a false morel mixed in with his morels. He became violently gastronomically ill for a day or 2 which was a surprise to him as he is well used to figuring out one species from another.

For the most part - unless you are really comfortable with the identification of edible mushrooms play it safe and avoid them.