Related Clues:

• Peanut
• Did one grind it up for a monkey?
• How mad of one to have been through the mill for the monkeys
• Grinding might make this food for a monkey
• Reason madman becomes an oil producer
• Stop fool from flying in monkey food
• Prepared teachers in North American plant
• Found overturned barrel to be a source of oil
• Train teachers, perhaps, to identify edible tuber?
• Reason teachers offer nutritious food
• Good-o! Head will provide something to eat
• Powdered head: that's an old scheme
• Establish teachers' source of nourishment
• Grand roly-poly fruitcake for the Primate's tea perhaps
• Stop fool flying -- it's not worth much apparently