Every time I drink Coke I pose myself with this question. I like the liquid in the glass bottle the most. I find the Coke in a plastic bottle the least delicious, and the can version between those two.

Is there a scientific reason for this? Or maybe it's just an imagination?

Some people believe that Coca-Cola seems more refreshing out of glass, because hard, cold glass seems more refreshing than soft squishy plastic. This means that if the drink is equally cold in glass bottle, can and plastic bottle, the taste must be equal.

It is also possible that the various materials (glass, plastic and can in this case) provide different co-tastes. In other words, Coke goes in some sort of chemical reaction with the container.

In order to fully answer the question, first it must be determined if there really exists difference between tastes or not. After the answer is positive, it must be explained what gives different taste.

A simple experiment can show if the difference in taste is imaginary or real.

1. You buy a can, a plastic bottle and a glass bottle of Coke.
2. You ask someone else to pour each type into separate glasses preferably of the same type.
3. You taste and see if you can detect the glass/plastic/aluminium.

We do the experiment with different people and once we have the statistical data, start making conclusions.

To be continued...