In preparation for a new In-n-Out creation, I ordered a cheeseburger with no sauce, grilled onions, and a mustard grilled patty. Chopped it up a bit, chopped it up a lot more, and then (after testing the resulting mix), put it back in the bun with some sauce. Not surprisingly, it still tasted pretty much just like an In-n-Out burger, just in much smaller pieces.
So again, just a fun experiment to see what a ground up burger would taste like. Nothing too special, but fun enough to post.