Possible Clues:

• There's something fishy, I see, about that mushroom
• Where to cook some rice with mushroom?
• Mushroom growth of eastern dignitary, getting almost wealthy
• That's a fish, I see, with mushrooms
• Umbrella-capped mushroom
• Fungus with cap and stalk
• 54, not changing and in charge of fungus
• Upstanding kid detained by spies spotted poisoner, perhaps
• Fungus in a bulb, light initially extinguished
• A pungent flavouring out of large fungus