Related Clues:

• Ipecacuanha is one, and you can quote me back!
• Milk-curdling agent
• Get money back providing curdling substance
• Upsetting note: 'This has turned the milk!'
• It's used to curdle milk for cheese
• Mention me spinning, inducing sickness
• Substance used in cheesemaking
• Returned note with what you need to make cheese
• Class including frogs, toads, newts, etc
• Dairy compound asking for money back
• Note about substance used to make cheese
• What will bring up article swallowed in church?
• Getting to cat's side, calm, mice's tails twitch
• Vomiting inducer
• Say what I said about drug