I always have at least a case of Goose Island root beer in the pantry.
My cousins ex wife worked at a A&W 25-30 years ago. They had to mix the root beer themselves every day. She said there was like 1# of sugar for every gallon. (The number could be a little off, but it was still a HUGE percentage)
Sugar gives drinks like Coke and root beer that sweet, carmely taste.
I don’t drink much pop anymore, but Root Beer is the best. yum