The secret language of taste: Cracking the code that helps you differentiate a candy bar from a potato chip

Liver. Limburger cheese. Caviar. Chili peppers. Blood pudding. Some things in life are undoubtedly acquired tastes. But for primary taste sensations-sweet, sour, bitter and salty- we don't need experience at all. Even a newborn can taste the difference between sugar and salt. Still, the brain activity behind the sense of taste is complex, and scientists don't entirely know how it works.