Miracle fruit makes (almost) everything delicious

Synsepalum dulcificum:

For about an hour after you eat it, everything sour tastes sweet... Scientists say a protein in the fruit works by binding to taste buds and altering the tongue's so-called sweet receptors to activate when sour foods are eaten. A French explorer known as the Chevalier des Marchais first encountered the effects in 1725 somewhere in West Africa, says Adam Gollner, who is writing a book about miracle fruit. The chevalier saw villagers eat the berry before consuming gruel and palm wine, so he gave it a try himself.