Mane netted a hat-trick in the first leg of a last-16 encounter with Porto to take him to 12 goals for the season.
When asked how he would describe Liverpool's outing in Portugal, Klopp told a news conference: "As a very good one".
A mistake from Porto goalkeeper Jose Sa allowed Mane's shot to squirm under his body after a slow start from the visitors, and Salah displayed all his class to make it 2-0 four minutes later inside the first half-hour.
"That's a real quality if you are not 100 per cent and still scoring, maybe not that often but involved in goals then that's really important", the German tactician added. It was really good tonight.
"Then they will come if you keep on working really hard like he did then there can be a moment like this".
In their first leg of the Champions League last-16 tie, Liverpool handed Porto their heaviest European home defeat in the Portuguese club's history, with a result that nearly certainly puts the Reds in the quarterfinals of the competition for the first time since 2009.
"Exactly as good as necessary, so in the end it was a high result but I think everyone saw in the game all the moments when we were not as compact as we wanted to be and Porto was immediately strong".
"We played great football, created great chances and scored five goals". "Each goal was kind of a victor".
"We spoke a lot about Mo in the last few weeks, completely deserved".
"Of course Sadio is man of the match but Roberto Firmino's work rate was outstanding again".
"Who was quickest? [Answer George Allan]. Wow". "I know the Champions League has taken over now and the money behind it, but success for club like that is getting your hands on trophies".
"We knew we were facing a great team but we weren't expecting this", said Porto defender Alex Telles, whose team was without injured midfielders Danilo Pereira and Andre Andre. "Congratulations but hopefully he [Salah] will not stop".
"We started the game on an even keel".
And even though Tottenham are also going well in Europe's top competition, the outspoken Republic of Ireland assistant manager had it in for them, too.
Both sides, however, should be confident of making the quarter-finals of the Champions League this season, at which point the dreams of winning it become that bit more vivid.