Prep your sauce and set aside
Dice your garlic and shallots, slice scallions set aside
Cut your veggies into bite size pieces.
Parboil carrots and napa cabbage
Boil some water and put your udon in for about 2 minutes, take it out and rinse. This will keep the udon's chewy texture.
In a pan, stir fry the scallions, garlic on medium. Stir fry for 1-2 minutes. Add in your uncooked protein (if using uncooked protein).
Add in tomatoes and stir fry for 2 minutes
Add in carrots, protein (if can be cooked very easily) and stir fry for another 2-3 minutes
Add in cabbage
Add your udon and let it simmer for another 1-2 minutes.
Drizzle the sauce and mix. Once the sauce is bubbling and everything is mixed well, top off with scallions and it's good to go.