Blue food

Nature's way of making food attractive is to colour it so that it looks delicious, so we expect our food to come in familiar colours.

Food companies sometimes need to add colour to their products to make them more natural-looking. We think that it tastes better, although the taste hasn't changed at all.

The colour blue isn't often found in natural food. THere aren't any blue vegetables and there isn't any blue meat. As a result, we don't have  an automatic desire to eat blue food. A million years ago, when our ancestors searched for food, vlue, plurple and black were 'warning' colours that the food may be poisonous.

However, as blue suppresses the appetite, it is used to help a lot of people who want to lose weight. Diet specialists advise people to eat off blue plates and to use knives, forks and spoons with blue handles.