The Blues enhanced their chances of securing Champions League football next season by beating their local rivals and after Mount played a pivotal role in the triumph, Tuchel heaped praise on the young star.
The German coach - whose side won thanks to two goals from Kai Havertz - said after the game: "He has the full package, mentally, in terms of talent and physically. And the most important part is his character, he has his feet on the ground and he's a nice guy.
"He comes to Cobham every day to learn something new and have new experiences. He is the guy who can recover very fast, he's a very physical player and is fully adapted to Premier League football.
"He has big self-confidence in a very, very positive way. It's a pleasure to have him, be at his side and guide him and support him.
"It's impressive, he's not affected by all the praise. This is maybe the most important part. He seems to be a guy who likes the sport and feels an obligation to make the most out of it. And he wants it absolutely badly, so it's a top mix."
Tuchel was particularly pleased with the effort and focus of his team, as the game was sandwiched between their Champions League semi-final with Real Madrid.
He told Sky Sports: "It was important that we invested fully physically and mentally. That's why the team gets full credit, it was a big win and we can arrive with a clear mind with nothing to regret or think about ahead of Wednesday."