I have done the same experiment. Only 2 out of 10 wine enthusiasts could with statistical certainty tell the difference between a rather big collection of white and red wines served at the same temperature.

And this is a meaningless experiment because all it demonstrates is that temperature (and the aromas and tastes produced at a given temperature) is an important feature for classifying wine, not that the wines are indistinguishable.

If these wine enthusiasts trained to drink all wine at the same temperature they would eventually learn to pick up the differences between red and white wines. But they did not train, so their classification error is high.

I dont know about that. Then they should have at least been able to correctly identify the wines served at optimal temperature (the red ones), but I can't say they did.

I didn't serve any spritzig white wines though. Then it would have been very obvious.

I'm not sure what you are saying. Your wine enthusiast friends were not able to identify the red wines served at the correct temperature in a blind setting?

That's not that surprising though! I enjoy drinking wine but I am really terrible at blind tasting. However, I have done blind tastings with people who _are_ trained sommeliers and it's very humbling to watch them taste and then methodically eliminate incorrect results until they eventually come up with the correct answer. Now, they are not always perfect, but for the most part they always at least get within the ballpark, whereas I am all over the map.

So, from my experience at least, I do believe that identifying wine in a blind tasting is a trainable skill, and it's not just hocus pocus.

Try it blindfolded some time, with both wines at the same temperature. Unless one of them is a super-sweet wine (moscato, gewurztraminer etc), you might be surprised at the result.

As my sibling said, try it out (with different whines)! I remember some red wines which tasted like whites and vice versa. Blind tastings teach humility.