As the name suggests, the Babbling Beverage was used to make the drinker babble nonsense. Along with its distinctive effect, it is said to smell like bubblegum. During Umbridge's reign as Headmistress, Padma and Parvati Patil brewed Babbling Beverage and sabotaged Umbridge's loudspeakers.

This potion is likely completed with the Babbling Curse.