I NEED THIS SAYCE ITS SO GOOD

Hi there, not realy sure where to ask this stuff (Mcdonalts reddit was never any help)

In Slovenia we used to have a hamburger called Royal Cheese, it was my favourite burger

This is how its made: https://youtube.com/shorts/--TkzkRFrpM

Its also called Royal Käse in Austria, Germany

But then they took it away, so if I want it now, I have to drive 150km away to eather Zagreb, Croatia or Klagenfurt, Austria

I somehow migrated to cheeseburger cuz it tasted similar, but I never knew why

Here is how cheeseburger its made: https://youtu.be/DtLd7xCbHzg

Trying to replicate it at home, cuz I am afraid they will take that away too

Can someone tell me the differences (I know the bun is different, and I believe onions too but what about the meat?) Its realy hard to compare the taste of them cuz its not easy to get my Royal Cheese nowadays

So if someone has a recipe on how to make it (Royal Cheese), that would be great

Anyone who used to work there have the recipe with the EXACT brands they use?

I see a lot of recipes floating around here but no one ever mentions the brands and I think that has a lot of influence on the finished product!

has anyone been able to crack down on this NYC goodness?! I make solid chicken over rice but that red chicken at adels + spicy rice got me droolin'!!!!