Liverpool were helped by Christensen’s moment of sheer panic that reduced Chelsea to 10 men right on the break – but they were head and shoulders ahead of a negative home team even before that crucial moment.
The champions dominated from the first whistle and it seemed only a matter of time before they scored, pinning Chelsea back in their own territory and probing for openings at will.
And when the breakthrough came, no-one deserved it more than Mane, now comfortable in world-class and willing to do the dirty work as well as apply the finishing touches.
Mane’s first goal was a superb header but in many ways he summed up what makes him the complete attacker with his second, reacting with fury at giving the ball away before chasing down Kepa.
The Senegal forward’s pace forced the error from a goalkeeper who does not necessarily need forcing into errors and effectively finished the contest with Liverpool’s second.
It was all so easy for Liverpool after that, Thiago easing his way in as a substitute although there will be a concern about yet another injury for captain Henderson, who went off at half-time.