If you are in Silicon Valley and want to experience a flip, try out 'the haberdasher' in san jose. So good. If they have a good thick stout on tap, get the 'beer flip' - I can't tell you what's in it, other than it's cold and sweet and slightly carbonated and involves a whole egg and some stout. How good it is depends a lot on what kind of stout they use; the best I've had was with a peanut butter stout.

Their 'fenway flip' is also pretty great.

The rest of their drinks are pretty good, too, and the bartenders are very knowledgeable if you come on a weeknight when they aren't too busy.