If you want a root beer float without the extra foam, take a page from the trusty bartender’s manual: Slightly tilt the mug or glass (about 20 degrees) while s-l-o-w-l-y pouring in the root beer.
Alicia Murray Balancing Motherhood on MSN1y
Root Beer Popsicles
These root beer popsicles are like root beer floats on a stick! They’re a creamy and frosty two-ingredient treat that you’ll want ...
[Paul] is sick and tired of his homemade root beer being flat. He analyzed the problem with his carbonation techniques and ended up with a method of force carbonating beverages using dry ice.