Story Of The Match
Mismatches continued to pop up across the pitch as Salah turned a defender to slide Sadio Mane through on goal for a first-time finish to open the scoring.
Liverpool's dominance continued throughout a one-sided first-half before s a slick move found Roberto Firmino to double the lead ahead of the break.
There was still time for the impressive Naby Keita to rattle the woodwork as the Guinean found himself in acres of space on the edge of the Watford penalty area to unleash a strike.
After the break it was much of the same from the visitors as waves of Ben Foster's goal came under siege.
On the 52 minute mark the game was over as a contest as an intercepted Andy Robertson cross broke for Firmino to fire into an empty net to make the score give Liverpool a crucial third.
Having previously been denied by a string of Foster saves, there was no stopping Salah just two minutes later as the Egyptian King mesmerised Watford defenders with quick feet, poise and precision to put further gloss on a resounding victory.
Substitutes for both sides made both sides disjointed and created a more open feel to the clash, perhaps allow the hosts a foothold they had previously lacked.
With the points already firmly in the bag and heading up to Merseyside, a fresh from the bench Neco Williams tormented Rose once again to cross for another Firmino tap-in in front of the adoring Liverpool supporters.
Firmly outclassed by a rampant visiting side, Ranieri will know there is plenty of work to do for the Hornets albeit easier tests lie ahead.
For the Reds it's back to the top of the Premier League for the time being and another statement victory.