Review: O-So Butterscotch Root Beer - Crafted in Washington. I snagged this long time favorite in hopes that it could be the butterscotch Root Beer that could change my mind on these types of Root Beers. Let's see what O-So has to offer. The decapping revealed a solid butterscotch smell across the board. The head was low through the pour and quickly disappeared. The taste was all butter with a punch of scotch. I honestly feel they forgot to put the flavors of Root Beer... the strong butterscotch and a hint of vanilla is all I get here, translation: Sweet... sweet... sweet... drink. Overall O-So created a great butterscotch drink; it's the best one I have had to date. If you like butterscotch, this is for you. Rating: 8.1 #RootBeer #OSoButterscotchRootBeer