I’m old enough to remember drinking a coke at a Drug Store soda fountain in my hometown when I was 5 and it was made right in front of you in a glass with coke syrup and seltzer . That was Coke !
There s a true soda fountain like that in Loves Park, IL on 251, a drug store of course. Glasses are tiny, like back then.
I remember as a child drinking a coke in bottle .. and it burned my mouth. It was the carbonation which I was not use to.