01 - In a bowl, combine the sliced pork with 1 tablespoon of soy sauce and cornstarch. Toss thoroughly to coat. Allow to marinate for 10 minutes.
02 - In a small saucepan, combine the chopped plums, hoisin sauce, rice vinegar, honey, 1 tablespoon soy sauce, grated ginger, minced garlic, chili flakes (if using), and water. Bring to a simmer over medium heat and cook for 8–10 minutes, stirring occasionally, until the plums soften and the sauce begins to thicken. Purée until smooth using a blender or immersion blender. Set aside.
03 - Bring a large pot of generously salted water to a rolling boil. Add the linguine or spaghetti and cook according to package directions until al dente. Drain the pasta, reserving approximately 1/2 cup of the pasta water, and set aside.
04 - Heat the vegetable oil in a large skillet or wok over medium-high heat. Add the marinated pork in a single layer and sear for 2–3 minutes, until browned on all sides and cooked through. Remove the pork from the skillet and set aside.
05 - In the same skillet, add the sliced red bell pepper. Stir-fry for 2 minutes until slightly tender-crisp.
06 - Return the seared pork to the skillet with the bell peppers. Pour in the prepared plum sauce and toss to coat all ingredients evenly. Add the cooked pasta to the skillet. If the sauce appears too thick, add a splash of the reserved pasta water to achieve desired consistency. Toss everything together until heated through.
07 - Divide the Plum Glazed Pork Pasta among individual plates. Garnish generously with sliced spring onions, toasted sesame seeds, and fresh cilantro leaves, if desired.