Crystal Palace take on Charlton Athletic at Selhurst Park on Wednesday evening.
Palace take on Charlton in the Capital One Cup on Wednesday evening, and Jedinak is expecting a fiercely contested match - as the two teams meet for the first time since February 2013.
With the Eagles making a lot of changes in recent times, there are not many players in the squad who were involved in that contest, and Jedinak says the new arrivals need to make sure they understand the meaning of the fixture.
"I think to play in a derby game against Charlton for Palace will be new for a lot of the boys so they’ll get to learn what they’re all about quite quickly," he said. "I haven’t played against them too many times myself but I remember they were always tasty affairs, and that they mean a lot to the fans and they get right behind their side on big occasions like that and I’m sure will happen again tonight.
"It’s cup football so there will be a winner at the end of the day and hopefully after all the preparation we’ve been putting in it’ll be us."
Palace lead the overall head-to-head record between the two London teams, with 32 wins compared to Charlton's 18.
They go into tonight's fixture at Selhurst Park as the favourites, too, after making a bright start to their Premier League campaign.
The Eagles have reinforced considerably over the summer, and now have real strength in depth within their ranks - with the signing of Yohan Cabaye highlighting their ambition.
Charlton, meanwhile, started the season well, but they have failed to pick up a victory in any of their last four matches, and they will be keen to get back on track by causing an upset.