There was a line, “He was not one for two-Perrier lunch,” in the eulogy for a British politician who made a great contribution to the formation of E.U. system.
Also there is the following passage in the co-authored book, The World's Business Cultures and How to Unlock Them, page 174, by Barry Tomalin and Mike Nicks:
Like many other aspects of American life, business entertaining and socializing is often informal. Americans tend to eat early, with lunch at around noon and dinner at six. The 'two-Perrier' lunch is increasingly the norm, and working lunches over sandwiches in the office are common. Heavy or enthusiastic drinking is frowned on amongst Americans, but tolerated in visiting Britons.
I assume that 'two-Perrier' lunch’ means a light lunch consisted of light meal like sandwiches and each one bottles of Perrier for two.
Is the word, 'two-Perrier' lunch’ very common in both U.S. and U.K. as the authors say ‘increasingly the norm’? What is it like? Does ‘two Perrier” mean one Perrier for each of two persons?
Is it “One-Perrier” lunch when we eat simple lunch alone, which we call 孤食（koshoku）a ‘solitary lunch’ in Japanese?