How to Make It
Light a grill and oil the grate. In a large bowl, whisk the 1/4 cup of oil with the soy sauce, garlic and ginger. Add the peppers, scallions and meat and toss to coat. Grill over moderately high heat, turning, 1 to 2 minutes for the meat, 3 minutes for the scallions and about 8 minutes for the peppers. Assemble the sandwiches on buns with mayonnaise and pickles.
Look for thinly sliced steak at Asian markets, or have your butcher slice it.