Mario eats mushrooms that look way too brightly colored to be safe, and the red and white ones are clearly inspired by fly amanita mushrooms, which can be toxic if not ingested properly.
But Mario has all the extra lives he could ever need, which make it okay for him to ingest potentially toxic substances, so what are humans with one life left supposed to eat instead of toxic mushrooms?
How about radishes that are sliced to look just like power up mushrooms from the Marioverse?
The Ravanello won't actually imbue radishes with the power-up abilities of a Mario mushroom, nor will it make people who can't stand radishes suddenly change their minds, but it does make some adorable food art!
-Via Laughing Squid