the great cola challenge of 2010: yes, we can or bottle!

what do you get when you combine eight types of cola with two nerds? a homemade cola taste test, patterned after the pepsi challenge!

idris and i are both loyal fans of coca-cola products: he's committed to the classic variety, while i have a mild addiction to diet coke. but would these preferences hold true in a double-blind taste test?!

we acquired a bottle or can of each of the following: pepsi, diet pepsi, diet caffeine-free pepsi, cocacola, diet coke, coke zero, compliments cola, and life brand diet cola.

using eight identical glasses and twice as many post-its, we achieved this:

i numbered the glasses and then, in private, wrote down which type of cola each number represented. i then left the area while idris rearranged the glasses and labeled them with letters. he also kept his code-key to himself.

in order to ensure that the test results were untainted, we did the taste-testing separately.

as we sipped from each of the glasses we tried to answer the following questionnaire:

a) which was your favourite?
b) which was your least favourite?
c) which was sweetest?
d) which tasted most like chemicals?
e) which ones were diet/zero? (5)
f) which one was caffeine-free?
g) which ones were coca-cola products? (3)
h) which ones were pepsi products? (3)
i) which ones were store brand? (2)

our answers were all over the map. we both correctly identified three of the five diet drinks, and i picked out the diet caffeine-free pepsi. diet pepsi fooled idris, while coke zero fooled me!

(i also knew which one was the store-brand cola, but that was a cheat: it was purchased last and was noticeably warmer than the others. by the time idris drank, the difference in temperature was probably negligible.)

while neither of us did a bang-up job of figuring out which drink was which, we did eventually each choose a favourite. the results, after this drumroll....



idris chose coke and i chose diet coke!

tada! sweet vindication!

word to the wise: if you want to recreate this, i'd suggest sticking with fewer options. the tastes are actually quite similar from cola to cola, so eight is, well, more than enough.

also, if you can swing this, buy cans and keep them all in the fridge for 24 hours before embarking on this adventure. that way, you can't cheat and when you're done you won't be swimming in quite so much pop you never intend to drink.

plans for the future: this might be worth repeating with other combinations. for instance, i arranged a quick follow-up test with just the colas, and idris was then able to distinguish between the coca-cola, the pepsi, and the store brand cola. you could also do one with kosher coke and regular, the former of which uses cane sugar while the latter uses high fructose corn syrup. or coke, diet coke, and coke zero. but, i repeat: the fewer samples, the better read you'll get on the differences between them.