A guy on the Internet recently reverse-engineered the Coke formula and published the recipe. I always liked Diet Coke, the regular one is just too sweet for me.
So I replicated the recipe, and I actually liked unsweetened Cola! It feels a bit tea-like, but also more acidic. Kinda like coffee but without the bitter undertone.
If you like Coke drinks, I highly recommend it.
There are lots of cola recopies, why is this guy confident he has Coke's?