The tongue and nose work together. The tongue is not the only one who 'tastes' your food. The nose is helping also.
Olfactory receptors inside the uppermost part of the nose contain special cells that help you smell. They send messages to the brain.
Try holding your nose the next time you eat something. You will notice that your taste buds are able to tell your brain something about what you're eating - that it's sweet, for instance - but you won't be able to pick the exact flavor until you let go of your nose.
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