It was a perfect eight-try performance in Italy from the Ospreys as they beat Heineken Cup minnows Viadana 62-7.
The Welsh region grabbed maximum points inside 33 minutes after first-half tries for Alun Wyn Jones, Nikki Walker, Jerry Collins and Ricky Januarie.
The visitors kept their foot on the accelerator as Richard Hibbard (two), Tommy Bowe and Gareth Owen scored after the interval.
Gavin Quinnell crossed for the hosts on the hour mark but it proved scant consolation for the Italian minnows.
The resounding victory for Ospreys puts the pressure on group rivals Leicester Tigers and Clermont Auvergne, who clash in France tomorrow.
The Ospreys were without a glut of experienced stars with regular skipper Ryan Jones, Mike Phillips, Shane Williams, Lee Byrne, Adam Jones and James Hook all sidelined.
But their major problem came at scrum-half with Phillips, Williams and Tom Isaacs all out injured.
With Jamie Nutbrown returning from a two-month lay-off, the Welsh region snapped up Januarie on a short-term loan.
However, red tape held up his arrival from South Africa and the World Cup winner was handed his European debut after just one training session.
But on the basis of his first-half performance, it looked as if he had been a long-serving campaigner for Sean Holley's men with an assured display.
Fly-half Dan Biggar opened the scoring for the visitors with a penalty in the sixth minute before a surge of tries arrived.
Viadana centre Garry Law missed two long-distance penalties but once skipper Quintin Geldenhuys was shown a yellow card by French official Romain Poite for persistent infringements, the Ospreys took advantage instantly.
Half-backs Januarie and Biggar combined and the fly-half saw his long pass find lock Jones in oceans of space to stroll over.
Januarie proved to be the heartbeat of every Ospreys attack and his quick tap set up Walker to power past Viadana number eight Gavin Quinnell to saunter under the posts.
Then Januarie cashed in for his first try for the region before stand-in skipper Collins coasted in for the bonus-point as the Italians were put to the sword at the Stadio Giglio.
Biggar produced an accomplished kicking display in a 22-point haul, converting the fifth and sixth tries courtesy of hooker Richard Hibbard either side of Quinnell crashing over for a consolation for Viadana.
Bowe and Owen also touched down for the Ospreys in the final quarter to complete the rout.
Tries: Wyn-Jones, Walker, Collins, Januarie, Hibbard 2, Bowe, Owen
Con: Biggar 8
Pen: Biggar 2
Viadana: 15 White Bula Clare, 14 Kaine Robertson, 13 Garry Law, 12 Sam Cox, 11 Matteo Pratichetti, 10 Lloyd Johansson, 9 Andrea Brancoli, 8 Gavin Quinnell, 7 Gareth Krause, 6 Josh Sole, 5 Quintin Geldenhuys (capt), 4 Sean Hohneck, 3 Ignacio Elosu, 2 Luigi Ferraro, 1 Miguel Alonso.
Replacements: 16 Roberto Santamaria, 17 Plinio Sciamanna, 18 Luca Redolfini, 19 Andrea Benatti, 20 Aldo Birchall, 21 Mickey Wilson, 22 Pierre Hola, 23 Michele Sepe.
Ospreys: 15 Gareth Owen, 14 Tommy Bowe, 13 Sonny Parker, 12 Andrew Bishop, 11 Nikki Walker, 10 Dan Biggar, 9 Ricky Januarie, 8 Filo Tiatia, 7 Marty Holah, 6 Jerry Collins (c), 5 Jonathan Thomas, 4 Alun-Wyn Jones, 3 Craig Mitchell, 2 Richard Hibbard, 1 Paul James.
Replacements: 16 Huw Bennett, 17 Ryan Bevington, 18 Cai Griffiths, 19 Ian Gough, 20 Tom Smith, 21 Jamie Nutbrown, 22 Jonathan Spratt, 23 Tom Prydie.
Referee: Romain Poite (France)
Assistant referees: Eric Soulan (France), Bernard Dal Maso (France)
Television match official: Jean-Pierre Pellaprat (France)