Food
Why Does Chocolate Melt in Your Mouth and Not Your Hand?
What unique property of cocoa butter makes chocolate melt immediately in the mouth?
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Why does chocolate melt in your mouth but not in your hand?
Cocoa butter melts at about 34-38 degrees C, just below body temperature. Your mouth is warm enough to tip it past that point, but your cooler hand keeps it solid longer.
What is the answer to the chocolate melting riddle?
The answer is that cocoa butter has a melting point that matches body temperature, around 37 degrees C, so it liquefies the moment it hits your warm tongue.
Is your hand really colder than your mouth?
Yes. Skin on your hand sits a few degrees below your core body temperature, while the inside of your mouth stays near 37 degrees C, which is why chocolate melts there first.