Preheat your grill to medium heat.
Clean your grill grates.
Oil your grill grates.
In a large bowl combine the hamburger, salt, white pepper and red pepper flakes. Mix just enough to combine the ingredients. You don't want to over-mix burgers.
Divide the meat into 8 pieces. Hand shape each into a large thin patty. Press your thumb into 4 of the patties in the middle to create an indent for the sauce and cheese.
Scoop sauce into each of the 4 patties. Then place mozzarella on top of the same 4 patties. Now place the other remaining 4 unstuffed patties on top. Press the edges with your fingers to seal the burger all the way around it. Pat it down to ensure there are no air pockets or leaks.
Place burgers on the grill, put the lid down and let them cook for about 4 to 6 minutes on one side, then carefully flip them over, put the lid down and allow to cook for another 4 to 6 minutes, depending how well done you like your burgers. You can remove or continue on for the amped up version.
Alternately if you like them amped up add more sauce and cheese over top, and close the lid for 5 minutes. The grill will stay hot after use and act like an oven to melt the cheese.
Make sure you turn off grill. Allow the burgers to stand for about 5 minutes, or so, to let the juices redistribute. While that's happening clean your grill grates. Cleaning them while they are hot is the most effective way to clean them. Plus it means your grill will be clean and ready the next time you want to use it.
Now plate the burgers any way you like. Get creative.
Serve with a big old burger month rocks smile!