[Egon pauses just a little too long as he continues to stare at the mushrooms.]

No. These are completely safe to eat.

[He scoops one out of the pan and holds it out for Michael to take. Michael carefully clutches it in his claws before shoving the mushroom under his cloth and (presumably) eating it.]

Do you mind cutting up this Pecha Berry for me? I need to make sure these mushrooms do not burn.

[...Still hasn't explained the mushrooms appearing in the first place.]