The role of sight in perceiving flavours
Select four flavours of yoghurt (e.g. banana, vanilla, strawberry, cherry).
Write down the flavour of each yoghurt on a label.
Pour each yoghurt into a glass and place it beside its corresponding label.
Then turn the labels over.
Ask someone to taste the yoghurts and guess the flavours.
Is it easy to identify the flavours?
Repeat the experiment by pouring natural yoghurt into four glasses and adding the flavouring of your choice (colourless essences if possible).
Is it easier or harder to identify the flavours?
Like your sense of smell, your sense of sight helps you recognise flavours. It is therefore harder to recognise vanilla yoghurt when it is white than when it is yellow. It would be even harder to recognise vanilla yoghurt if you had added pink colouring!