At our Memorial Day cookout (OK, Fourth of July and Labor Day, too), among other things, we always have sweet grilled Italian sweet sausage subs with peppers and onions on fresh Tripoli Bakery Italian rolls. There is nothing like them. These are the perfect thing to make ahead (as I do), so you can enjoy your cookout and your guests. I love DiLuigi sausages. I’ve tried a lot of sausage…