1. Boil the udon noodles according to the package instructions. Drain them and rinse with cold water. Drizzle with some oil and set aside.
2. Heat 1 tablespoon of oil in a pan. Toast the minced garlic for 1 minute, then add the mushrooms. Cook on high heat, stirring until they are done.
3. Add the onions, white part of the spring onions, and carrots. Stir for 2-3 minutes. Sprinkle a pinch of salt and pepper, and take the veggies out of the pan.
4. In the same pan, add an additional 2 tablespoons of oil and fry the shrimp. Add soy sauce and a pinch of salt. Cook until the shrimp are no longer pink.
5. Add the udon noodles to the pan. Fry on high heat, stirring continuously to help the noodles crisp up slightly.
6. Pour the sauce over the noodles and stir everything together.
7. Toss the veggies back into the pan and mix well.
8. Turn off the heat and sprinkle with spring onion.