A small red berry with a thin layer of pulp around one large, bitter seed. Eat only the pulp: for up to half an hour afterwards, sour foods such as lemon taste sweet. It is grown in south China and also sold as tablets.
A small red West African berry containing miraculin, a glycoprotein that binds to sweet taste receptors and makes sour foods taste sweet for about 30 minutes. Promoted in China since the 1960s as a sugar substitute for diabetics.