So I will admit I tried the root beer before making it to a float to make sure it was good. I don't know if I'll ever buy it regular again! It gave the float an extra punch of flavor, but it didn't make it overly sweet.
How did I make it? You wouldn't believe how quick it took. I think I spent more time savoring the float than I did making it!
So this is the brand I used. I haven't seen any other brands that have this flavor so for now I'll keep buying this one.
I scooped me up some lactose free vanilla ice cream in a vintage Coke glass and slowly poured in the soda. The key to an awesome float is how you pour the soda over the ice cream. If you pour it too fast it will end up on the counter. Poured over ice cream the root beer gets extra frothy so slow and steady gives you a better soda to ice cream ratio.
And with that I happily enjoyed my float until the very last drop.