I know nothing about the Cola recipe, but this fork seems to change some things up [1]. README says it is from "This American Life" [2] but it looks like it is closer to that of colawp.com [3].

'TAL' calls for FE Coca, Alcohol, and Vanilla but 'colawp' does not.

1: https://github.com/mmichelli/Coca-Cola/compare/master...cogn...

2: https://www.thisamericanlife.org/extras/the-recipe

3: https://www.colawp.com/colas/400/cola467_recipe.html