The forward, making his 28th league appearance of the season came on as a substitute and provided two assists to help the Old Lady return to winning ways, after a loss to Borussia M'gladbach in their last game.
After a goalless first half, Davie Selke broke the deadlock from the penalty in the 57th minute and 18 minutes later Kalou put Matthew Leckie though on goal to increase the lead.
The former Chelsea forward was again instrumental to the third goal when he found Alexander Esswein in the 90th minute to seal a comfortable victory for Michael Preetz’s men.
The victory propelled the Olympiastadion outfit to the ninth spot in the log as they have now gathered 42 points from 31 games.
Kalou has 11 league goals and three assists this season. He will be hoping to be in the starting lineup when Hertha play host to Augsburg in their next league game on April 28.