Answer: froths

AnswerCrossword Clue
FROTHSBubbles
FROTHSCovers with foam
FROTHSYeasts.
FROTHSFoams.
FROTHSBeer heads
FROTHSFoams
FROTHSEffervesces
FROTHSGets a head
FROTHSForms a mass of small bubbles
frothsFROTH, to foam (to form froth or bubbles)
frothsfoam
frothsto cover with or give out foam