Pork Fried Rice

Name: Pork Fried Rice
Cook time: 25 min
Total time: 25 min
Cuisine: Asian, Japanese
Ingredients: 3 tablespoons soy sauce; 5 teaspoons rice vinegar; 1 tablespoon toasted sesame oil; 1/4 teaspoon sugar; 1/4 cup solid vegetable shortening; 3/4 pound Chinese barbecued pork, half cut into 1/2-inch dice and half sliced 1/3 inch thick; 1/2 cup frozen peas, thawed; 2 large shiitake mushrooms, stems discarded and caps thinly sliced; 1 carrot, cut into 1/3-inch dice; 1 head baby bok choy, halved lengthwise and thinly sliced crosswise; 4 large eggs, lightly beaten; 6 cups cold cooked Japanese short-grain rice; 2 scallions, thinly sliced; Pinch of freshly ground pepper; Kosher salt; 1/4 cup pickled ginger