Possible Clues:

• Alias for H.H. Munro
• Japanese alcoholic drink made from rice
• H.H. Munro, pseudonymously
• The last word. So be it
• 'Reginald' author
• Writer Munro
• Monkey given drink
• Aka H.H. Munro
• A drink in Japan for Munro
• Author who famously ended a short story with the line 'Romance at short notice was her specialty'