Such a riotous showing, in what was their maiden Champions League knockout game for nine years, propelled Liverpool to the top of the goalscoring charts in this season's competition and ensured the second leg on 6 March should be a mere formality.
Eight minutes into the second period, Salah charged down the right side and left the ball for Roberto Firmino, who got off a quick shot.More news: CNN Terror Expert Breaks Down In Tears Over Florida Shooting
More news: Alvaro Morata makes vow to Chelsea FC fans ahead of Barcelona clash
More news: Grief as Zimbabwe opposition icon Tsvangirai dies
Portuguese European football mainstays Porto will be no pushover, even if Liverpool might have faced tougher opposition in the form of Real Madrid, Juventus or Bayern Munich. Let us know what you think by leaving a comment below.
Meanwhile, Mane who has been facing up and downs this season swung back to show what he brings to the table for Liverpool.
The trio - the most prolific forward line in the competition - needed just six shots on target to beat goalkeeper Jose Sa five times. Mane might not have been talked about as much as Salah and Firmino recently, but this was a reminder of his qualities.
Add to that another clean sheet - only the second time since February 2011 they have kept three consecutive clean sheets away from home - and Klopp was happy. "There is another leg at Anfield to finish the job off, so there is a lot we need to do to improve, but [Porto] was a good step". Paris Saint-Germain were the only team during the group stages to score more goals than Liverpool, as the Parisians racked up an impressive 25 goals; mostly accounted for by the likes of Neymar, Kylian Mbappe, and Edinson Cavani.
Klopp spoke about the importance of playing in this stage, saying, "As a team, you grow with all games you play, hard circumstances, strong opponents, showing good reactions after unlucky or deserved defeats; it all helps you grow".