A Muffuletta is a pressed sandwich -- filled with cold cuts, cheese and an olive spread -- that only gets better as it sits. So it's the perfect thing to take on a camping trip: while you're out hiking or fishing, its flavors will meld all the more.
Slice the loaf in half lengthwise and hollow out the bottom half, leaving a 1/2-inch border on all sides. Save the bread filling for another (like bread crumbs).
Add the olives, giardiniera, peppers, oil, capers and vinegar to a food processor and pulse until the texture is similar to a chunky relish.
Layer the bottom half of bread with half of the cheese, then spread half of the olive mixture on top of the cheese. Top with the mortadella, salami, ham and the remaining cheese. Spread the remaining olive mixture on to the top half of the bread. Close the sandwich and wrap it tightly in plastic wrap. The sandwich can be made and refrigerated the night before. Pack it on the bottom of your cooler and let the weight of the other food press and flatten the sandwich.
When you are ready to serve, cut in to 6 even pieces.
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