I would take that bet. I'm prepared to believe there are wines that if the only question is 'white or red' I might not know, especially if an ambiguous temperature. (Most people are accustomed to drinking white 'too' cold, and red 'too' warm - so obviously in such a test you have to remove that cue, but then what do you choose and still get a good fair test?) but there are also wines that I could tell you which of two grapes it is with nothing but my teeth. (I wouldn't say I'm a snob, but I'm sure you'd disagree.. meh, whatever.)

Coffee.. geeze, much more so. If the only thing available is a jug of brewed coffeewater that you pump out nice and bubbly, as at hotel breakfast bars or conference centres, I have to really 'need' it, and then I pack it with sugar to take the taste away. (I don't ordinarily drink coffee with sugar at all.) Instant, I just can't drink. I could definitely tell you the difference between instant 'coffee' and real, it's not a case of having a preference and better 'notes' like 'essence of snobby bullshit' - one I would be able to drink, and the other I would want to spit out before it even hit my lips.