In part (1 ) I’ve talked about perception, taste and how taste works. I’ve also mentioned flavor. We can define taste by the chemical sense perceived by receptor cells and flavor as a combination of multiple senses, like smell, thermal sensations and even pain in case of very spicy and hot foods. Question: does vision have an actual impact on flavor? Is it one of these multiple senses like smell?
Answer: a study was performed to assess the influence of visual cues on taste perception by Gail McHugh. This study tested taste perception after coloring lemonade and could conclude that their hypothesis: “when visual cues are frustrated, taste perception will be adversely affected” could be accepted.  They also refer to several tests that all conclude that it is easier to determine the correct flavor when the drink has the expected color. Also one test noted that younger participants made more often mistakes than older ones when matching the right flavor to a misleading colored drink.
Looking at these studies and at the question if vision has an influence on taste perception it is reasonable to assume that it has.
New question: Is it ok for scientists to alter with the composition of food to make the taste perception better? In my case: make beer clearer, it is easy to say yes because there is no serious downside. But what about the following:
“When food scientists manipulate taste sensation, they use chemical compounds to block or stimulate taste receptor cells. One such company, Senomyx, contracts with Campbell’s Soup, Coca-Cola, Kraft Foods and Nestlé. Senomyx states that its flavor enhancers and taste modulators will allow companies to “improve the nutritional profile” of packaged foods and beverages by cutting back on sugar, salt and MSG without compromising flavor .”
Back to the title of this post: is taste a science? And is it ok for the food industry to alter this science and so our perception of taste for their own benefit?
 http://www.gerardkeegan.co.uk/tsp/arm_project_1_gail.pdf ,McHugh, G., An investigation into taste perception, HND Social Science
 http://science.howstuffworks.com/environmental/life/human-biology/taste1.htm, Dowdey, S., How taste works, A discovery company