english: It's a glycoprotein called miraculin, a naturally occurring thing. It still freaks me out every time I eat it, but it has a unique ability to mask certain taste receptors on your tongue, so that primarily sour taste receptors, so normally things that would taste very sour or tart, somehow begin to taste very sweet.
non_english: Radi se o glikoproteinu koji se zove mirakulin, koji se javlja u prirodi. Šokiram se svaki put kad ga jedem, ali ima jedinstvenu sposobnost da maskira određene receptore ukusa na jeziku, pre svega receptore za kiselo, tako da ono što bi inače imalo jako kiseo ili opor ukus, nekako počinje da bude jako slatko.