Two minutes into the game, Nigeria’s David Akintola headed the ball into his own net while trying to clear an inswinging corner kick.
While the visitors were still trying to recover from their early setback, Besiktas doubled their advantage through Larin in the 11th minute.
Receiving a pass from Atiba Hutchinson in the goal area, the Canada international powered a close-range effort past goalkeeper Munir Mohamedi.
Three minutes later, the 26-year-old completed his brace of the evening with the easiest of finishes having been teed up by Adem Ljajic.
In the goal-laden first half, N'Koudou handed his team a four-goal lead in the 38th minute. The former France youth international of Cameroonian descent slotted the ball past Mohamedi thanks to good work from Rachid Ghezzal.