What's everyone's favorite root beer? Can be either a megabrand, a local brand, or a small, lesser known brand. My favorite is 1919 Root Beer, right off the tap. My family rents an 8 gallon keg every new years and it is the most delicious pop I have ever tasted, not to mention best root beer of all time. In my opinion, other root beers are either way too soft (MUG or A&W for reference) or have way too much bite (Barq's for reference), but 1919 has the perfect blend.