Revised Idea

 I brought in a mock up version of my project to the studio yesterday. I had four people try it out. It wasn't as unique/ exciting as I wanted.

SO

I have a new idea, continuing the different tastes. I'd have a board divided into four and my four numbered bottles as well as  a bunch of different kinds of stickers. 

You taste each bottle and decide what sticker you think best expresses each flavour. Then stick it onto the numbered section of the board for that bottle. I'll have spikey shaped stickers and round ones etc. with different colours.

And by the end I'll have a board with a visual representation of each flavour.I think this would be interesting because some people might choose a spikey sticker for a sour taste because the taste is quite sharp whereas other people might choose a round yellow one because lemons are round etc.

 I'll draft different ways to present the bottles and stickers.And I think I will make the flavours interesting mixtures, that way people will have a harder time choosing a sticker.