Two versions of that 1970 single exist -- the "Coca-Cola" version and the "cherry cola" version. From the liner notes in "The Kinks The Singles Collection" CD:
'We recorded that twice', Ray Davies reveals. 'When we did it the first time at Morgan Studios, it began with this repeated guitar motif. But when I listened back, I thought, "This sounds like a Top 10 hit, but not a No. 1". So I remembered an old trick -- find a hook in the song that isn't the melody, and repeat it. I used the three-chord guitar riff that was between the verses, and stuck it on the front.' The result was a No. 1 single, helped on its way by Ray's transatlantic flight to overdub the word "cherry-cola" in place of "Coca-Cola", which averted a BBC airplay ban.