1. Drain the giardiniera and the pepperoncini, reserving 2 tablespoons of the brine from each. Stem the pepperoncini, roughly chop and mix together with the giardiniera and olives in a medium bowl.
2. Stack the provolone, bresaola, mortadella and sopressata and cut into quarters.
3. Toss the escarole with the reserved brine. Put a third of the escarole in the bottom of an 8 by 5-inch trifle dish. Next, layer a third of the giardinera mixture, followed by a third of the tomatoes and then a third of the artichokes. Scatter half of the meat and provolone on top of the artichokes.
4. Repeat the layering process 2 more times, so that there are three layers of all the components except the meat and provolone. The top layer will be artichokes. Serve on toasted baguette.