Mongolian Beef Sandwiches

Ingredients

• flank steak

  sliced against the grain, cut 12 thick slices for satays
  2 pounds
• canola oil
  ½ cup
• sesame oil
  1 tablespoon
• thin soy sauce
  ½ cup
• shaoshing wine or red wine
  ½ cup
• garlic; minced
  2 tablespoons
• scallions; chopped
  ½ cup
• coarse ground-black pepper
  ½ tablespoon
• canola oil
  1 unit
• red onions; sliced
  2 unit
• serrano chiles; minced
  2 unit
• white cabbage; chopped
  ½ head
• red bell peppers; julienned
  1 unit
• green bell peppers; -julienned
  1 unit
• carrots; thinly sliced
  2 unit
• pita bread

  toasted; grilled or heated in the oven
  4 unit