Re: Controlled experments: thats the ticket
I wonder if music while you eat makes a difference to how something tastes. There must be bandwidth problems in the nervous system and brain when there are multiple stimuli.
The back of the nose is important in differentiating tastes. Synaesthesia happens to us all even if only sunlight causing us to sneeze.
Illuminating things with blue light tends to put people off eating them. IIRC supermarkets play particular types of music to encourage people to buy things.