Quote:
	
	
		| 
					Originally Posted by CamoFlogged  Brush a teaspoon of regular yellow mustard over the patty prior to flipping it over on the grill.  Flip it, cook it for a few and serve.  Maybe not gourmet but good eats!
 
 BTW, for those that like In-N-Out (burger chain) burgers, the fried mustard is their "secret".
 | 
	
 Are you sure about that?  I think that's just the "Animal Style" burger from their  "secret menu" which is fried in mustard.  Other burgers are just cooked on the grill plain.
http://www.in-n-out.com/menu/not-so-secret-menu.aspx