Never

Never write in a café, especially in Europe. Ever since Hemingway, this has been the literary equivalent of what in mountain climbing is called the "tech weenie" (that is, someone who cannot get a foot off the ground but is weighed down with $10,000's worth of equipment). Literary skill, much less greatness, cannot be had with a pose, and exhibitionism extorts the price of failure. Also, have pity on the weary Parisians who have wanted only a citron pressé* but have been unable to find a café where every single seat is not occupied by an American publicly carrying on a torrid affair with his moleskin.

MARK HELPRIN

cit·ron pres·sé *
/ˌsiträn preˈsā/
noun
noun: citron pressé; plural noun: citron pressés; plural noun: citrons pressés; noun: citron presse; plural noun: citron presses

a drink made from freshly squeezed lemon juice, water, sugar, and ice.
"he sat on the terrace beneath a red parasol and sipped a citron pressé"