Swedish striker Henrik Larsson completely healed the emotional scars of his horrific broken leg in Lyon with a goal to help Celtic comfortably brush aside the Luxembourg minnows on their return to European club competition.
Last night he announced his return to the big stage with their third goal after Slovak Lobu Moravcik had killed the tie off with an impressive double.
Moravcik and Bobby Petta too had something to celebrate in their first starts of the season as they replaced Israeli Eyal Berkovic and Stilian Petrov respectively in Martin O'Neill's starting 11.
They repaid the manager's faith with goals to put Celtic in a commanding position in the first round qualifying tie and almost certain to be in the draw for the first round proper of the UEFA Cup in two weeks. It was always going to be a stroll for the Glasgow giants over the amateurs of Jeunesse and they threatened in the early stages with Petta, in particularly, out to impress.
It was inevitable that Celtic would take the lead sooner or later, but they had to wait 36 minutes for it to come. Larsson, who was making his first appearance in European club competition since breaking his leg in Lyon last October, slid the ball into the path of the on-rushing Moravcik inside the area and he calmly slotted the ball past Van Risswisck and into the bottom corner.
Larsson should have capped his return to the big stage with a goal in the 44th minute when Moravcik found him in space, but his effort from the edge of the area was brilliantly pushed over by the Jeunesse goalkeeper.
Celtic were looking to kill the tie off after the restart and Chris Sutton was given an opportunity to do just that in the 49th minute when Mjallby played the ball onto him, but the England striker's right-foot effort went just wide.
There was little Van Risswisck could do to prevent Celtic adding a second in the 58th minute when Sutton played a perfectly-weighted ball between two defenders into the path of Moravcik, who fired emphatically past the goalkeeper from the edge of the box and into the bottom corner.
The tie was completely killed off just three minutes later when Sutton and Larsson combined on the edge of the area and the Swede controlled the ball with his right foot before placing past Van Risswisck with his left.
But another goal did arrive in the 81st minute when Petta got the goal his performance warranted when he cut through a group of players before unleashing an unstoppable drive past Risswisck to send the travelling green and white army partying into the night.
JEUNESSE ESCH: Van Riffwifck, Lamborelle, Thill, Schaack, Schault, Wagner (Meylender 72), Bokboiloni, Stut, Kurtz (Nies 65), Anodio, Bekil. Subs Not Used: Logenin, Laruall, Dillmann, Muller, Sabotic.
CELTIC: Gould, Mahe, McNamara (Healy 62), Valgaeren, Larsson (Johnson 62), Sutton, Lambert, Petta, Mjallby, Riseth, Moravcik. Subs Not Used: Kerr, Berkovic, Sheilds, Tebily, Burchill. Booked: Lambert. Goals: Moravcik 37, 58, Larsson 61, Petta 81.