Related Clues:

• Training (to make holes?)
• Drink from apples
• Procedure - practice
• Material - exercise
• Exercise - bore a hole
• Scrumpy
• Exercise by repeated practice — bore
• Stout cotton cloth
• Maybe private practice doctor takes sick?
• Bore — exercise
• "Hard" apple drink
• Repetitive practice
• (Correct) procedure
• Autumn apple beverage
• Drink that may be hard or sweet