In a 12-inch non-stick skillet over medium heat, toast the cashews until golden, about 5 minutes. Remove from the skillet and allow to cool.
In a medium bowl, whisk together the chicken broth, Mirin, Tamari, and 1 ½ tablespoons of cornstarch until no lumps remain; set aside.
Cut the pork crosswise into ½-inch thick slices, then cut each slice into ½-inch thick strips. Toss the pork and the sesame oil together in a large bowl. Add remaining 2 tablespoons of cornstarch to pork and toss to coat.
Heat 2 teaspoons of safflower oil in a 12-inch non-stick skillet over medium-high heat until just smoking. Brown half of the pork, 3-5 minutes. Transfer pork to plate and tent with foil. Repeat with 2 teaspoons of oil and remaining pork.
In now empty skillet, heat the remaining 2 teaspoons of oil. Add the onion and sauté until lightly golden, about 3-5 minutes. Add the snow peas and sauté until bright green, about 1 minute. Add the garlic and ginger and cook until fragrant, about 30 seconds. Whisk broth mixture to recombine and add to the skillet. Cook until thickened, about 2 minutes. Return pork and any accumulated juices to the skillet, stirring to coat the pork. Add the cashews and cook until heated through, about 1 minute. Serve over steamed white rice and chili paste to taste. Enjoy!