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Throughout history, people have come up with different theories about why and how we taste different things. But which of them are true?

Have you ever wondered why there are foods that everyone seems to love, like chocolate, while others don't have many fans?

Have you ever noticed that food tastes quite bland when you have a cold? Or that, perhaps, you like red foods better than green veg?

Taste is one of our most important senses. It tells us which things are good to eat and which are not.