[mistermumble]

I think this has changed over time, from the three-martini lunch of Mad Men in the 1950s, to (say) two-martinis in the 1970s to perhaps one-martini in the late 1990s. I remember a working for a software company years ago where the "old guy" on that particular group would have two beers when we went out to lunch mid-week. The young guys chose caffeine.

[vadman]

The drinks used to be much smaller in the 1950's, so 3 martinis would not derail your day. Source: http://www.amazon.com/Hows-Your-Drink-Cocktails-Drinking/dp/...

[mmariani]

Usually when I have wine at lunch, my coding productivity improves. On the other hand, with caffeine not so much.

[gadders]

Same in the UK. No-one drinks at lunchtime any more :-(

[corford]

One of the things I like about France (as an Englishman living here) is that it's still normal for people to have a glass or two of wine at lunch. I think it's remained in the culture because most businesses give their staff two hours for lunch and subsidised meal tickets they can use at any participating restaurant (which is pretty much all of them). Who wouldn't have a glass or two in that setup? :)