The world is basically divided into people who like Pepsi and those who prefer Coke.

PepsiCo / @selenagomez / Via Instagram: @https://www.instagram.com/selenagomez/?hl=en
Pepsi lovers SWEAR their soda is more refreshing, while Coke fans stand by their soda's classically sweet taste.

@jamescharles / Via Twitter: @jamescharles
And despite all the debate, no one's really nailed down what's so different about the two flavors.
CNN
Well, it actually turns out author Malcolm Gladwell's already done just that.

In fact, if you look up each soda's ingredients, you'll notice that while Pepsi includes citric acid in its list...

origin-www.pepsicobeveragefacts.com*26*01-01&form=RTD&size=20
...Coke is made up of the same ingredients, minus the citric acid and added sugar.

Not that the explanation settles which flavor is better.
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So, which cola IS better?
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vote votesCoke — it's the original, after all.
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vote votesPepsi. Why are we still arguing about this?
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vote votesNeither are that great, TBH.
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vote votesEw, soda.