Bring a large pot of water to a boil, salt it, add the pasta and cook until al dente. Drain.
While the pasta is working, using a blender or food processor, combine a splash of the boiling water (before you add salt), the ginger, garlic, tamari, honey (or agave), tomato paste, vinegar, sesame oil and hot sauce until smooth.
Get all of the remaining ingredients ready for a quick stir-fry. In a large skillet, heat the vegetable oil over high heat. Add the chicken or pork and stirfry until browned, about 3 minutes. Add the cabbage and bell pepper and stir-fry for 2 minutes, then add the scallions and ginger sauce and toss for 1 minute. Pour over the drained noodles and top with the sesame seeds. Pass more hot sauce around the table.