Chelsea rounded off their mini-European pre-season tour with a 2-1 win against Hungarian heavyweights Ferencvaros.
The hosts opened the scoring through Premier League old boy Zoltan Gera, turning home at the far post after great work on the flanks, but Chelsea hit back in the second half through a Ramires golazo.
Cesc Fabregas continued his great pre-season by weaving into the box and hitting the winner in sublime style, completing a shift in momentum and rewarding the Blues with a much-deserved victory.
The game started with a flurry; Ferencvaros fed Gera for a snapshot after Filipe Luis made a mistake in possession, then Didier Drogba saw his close-range shot saved after Andre Schurrle fed him in the box.
Schurrle then swung in three fantastic set pieces which Kurt Zouma could have scored a brace from, but his headers were high and wide on two occasions and he badly mistimed one jump.
Petr Cech then tipped a good effort over the bar from close range to keep his sheet temporarily clean, but the inevitable first strike for the hosts soon followed and the sole familiar face was the culprit.
A wonderful cross from the right split Zouma from his marker in the centre, and Gera was on hand to stab home at the far post. The finish, cool and collected, was tipped by Cech but ultimately too powerful to stop.
Drogba then hopped off in agony after 28 minutes to force a Mourinho re-shuffle from the bench, with Oscar entering the fray in his place. Fernando Torres moved to centre-forward, Andre Schurrle left and Willian right.
It may have been Schurrle's first game back since the FIFA World Cup 2014, but no sharpness was lost on him. His feet looked quick, he moved well and took up some very dangerous positions.
The Blues came closest to finding a goal in the first half through him, with his curling free-kick from 25 yards hitting the stanchion behind the net.
With thunder on his face, Mourinho rolled out the changes: Five in total and a formation tweak too.
Switching to a three-at-the-back system, the away side initially looked uneasy in the defensive phase and conceded spurts of pressure and a chance wasted by Tomislav Havojic. Oddly, Zouma played right-sided centre-back and Branislav Ivanovic left.
But soon Cesc Fabregas took the game by the scruff of the neck by controlling midfield, and Chelsea's increased influence bore fruits just seven minutes in. Ramires ended up with the ball after Mohamed Salah's cross was cleared to his path, and he released the kraken with a dipping left-footed shot that left the 'keeper no chance.
Gary Cahill then headed against the post from a Fabregas corner, and Ferencvaros managed just one more half-chance in the second half, halted by Nemanja Matic, as the tide completely turned.
Eden Hazard, making another sporadic pre-season appearance, later scorched the defensive line and fed a ball across for Oscar, but the Brazilian just missed contact as he breached the six-yard box.
In the 82nd minute the Green Eagles finally caved, fittingly, to a mesmeric piece of skill from Fabregas. His weaving dribble beat three players and the strike left the goalkeeper helpless.
No matter the result, Chelsea are moving through the progressions and will finish a hectic pre-season slate on Tuesday evening against Real Sociedad.
A gruelling schedule in which Chelsea visited seven different countries has been questioned by some, but the sheer size of Mourinho's squad dictated a long list of matches. All are coming into prime fitness ahead of the opening day clash with Burnley in the Premier League.
Next stop: Stamford Bridge for a date with La Real.
Kurt Zouma: C
Struggled with his positioning all game and flunked a few strong chances to draw Chelsea level from set pieces. Not his finest outing.
Daniel Bode: B+
Bode was a livewire, moved well, found space and looked a threat with the ball at his feet.