Bring a large pot of water to a boil. Add the udon noodles and cook for 8-10 minutes, or until tender.
Meanwhile, heat the oil in a large skillet over medium heat. Add the broccoli, bell pepper, garlic, and ginger and cook for 5 minutes, or until the vegetables are tender.
Add the soy sauce and rice vinegar and cook for an additional minute.
Drain the udon noodles and add them to the skillet. Stir everything together and cook for an additional 2 minutes, or until everything is heated through.
Serve the udon noodles with vegetables hot.
Interesting Facts
Udon noodles are a type of thick, wheat-based Japanese noodle.
Broccoli is a great source of fiber, vitamin C, and other nutrients.