He will lunch with you at your flat tomorrow at one-thirty. Please remember that...

He will lunch with you at your flat tomorrow at one-thirty. Please remember that he drinks no wine, strongly disapproves of smoking, and can only eat the simplest food, owing to an impaired digestion. Do not offer him coffee, for he considers it the root of half the nerve-trouble in the world."
"I should think a dog-biscuit and a glass of water would about meet the case, what?"
"Bertie!