We put all sorts of greens on the grill these days, including romaine lettuce, so why not iceberg? Putting it in the freezer for 10 minutes keeps it crisp on the grill, but don't keep it in longer than 10 minutes or it may sog out. If you make the dressing ahead of time, it will thicken up; thin it with a bit more water. If you have salted peanuts on hand, chop some and toss them on top of the dressed wedges.
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