When you swallow a peanut, it first comes in contact with your tongue, which is the primary organ responsible for the initial sensation of taste. The tongue is covered in small structures called papillae, which contain taste buds. The taste buds have receptors that detect different tastes such as sweet, sour, salty, and bitter. So, when the peanut touches your tongue, these receptors send signals to your brain, helping you perceive the taste of the peanut.
