Boil the udon noodles according to the package instructions. Drain and rinse with cold water. Drizzle some oil and set aside.
Heat 1 tablespoon oil in a pan, toast the minced garlic for 1 minute then add the mushrooms. On high heat stir around until cooked. Then add the onions, white part of spring onions and carrots. Stir for 2-3 minutes. Sprinkle a pinch of salt and pepper and take the veggies out.
In the same pan add additional 2 tablespoon oil and fry the shrimp. Add soy sauce and pinch of salt. Cook till the shrimp are no longer pink.
Then add the udon noodles. Fry on high heat, stirring continuously so the noodles slightly crisp up evenly.