It's claimed that what we eat can determine our mood, with new claims that our tongue is a window to our psyche.

Eating something bitter can allegedly make you more judgmental and more emotional.

The study asked people to watch an anger-inducing video after they ate, and found they got more angry, scared or sad after something sour.

Also, having a sweet drink instead of water can make you feel more romantic and keen to go on a date.

The theory is that a bitter taste is a warning the food may be toxic, so we're programmed to avoid it.

The study was done at the Occidental College in LA.