Cold Cheese and Whole Grilled Onions at In-N-Out

It turns out that there is still quite a bit from In-N-Out's secret menu that I still haven't tried yet, so I went for a few of them today. The best one was the cold cheese, which as the name suggests, is cheese that hasn't been melted on the griddle, which to me just tastes better. I also liked the whole grilled onion, as it was nice to have sliced rings in there rather than their standard chopped ones. The thing that I couldn't figure out though was the mustard-grilled patty, which was difficult to taste when buried underneath everything else.