Prepare the Noodles: Start by bringing a large pot of salted water to a rolling boil. Once boiling, add the lo mein noodles and cook them according to the package instructions, which typically takes about 3-4 minutes. Once cooked, drain the noodles well and set them aside in a bowl.
Sauté Aromatics: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering. Add the minced garlic and grated ginger, quickly stirring them to avoid burning. Sauté these aromatics for about 30 seconds, or until they become fragrant and golden.
Stir-fry the Vegetables: Introduce the shredded carrots, snap peas, and julienned red bell pepper to the skillet. Stir-fry the vegetable mix for 3-4 minutes, ensuring they remain tender-crisp for the best texture.
Combine Noodles and Veggies: Gently add the cooked lo mein noodles to the skillet, using tongs or a spatula to toss them with the vegetables. Mix thoroughly to ensure the noodles are well-integrated with the veggie medley.
Prepare the Sauce: In a small bowl, whisk together the soy sauce, sesame oil, rice vinegar, and chili paste (if you're including it for heat). Pour this flavorful sauce over the noodle and vegetable mixture. Stir-fry everything together for an additional 2 minutes so that the sauce evenly coats the noodles and heats everything through.
Finish with Green Onions: Once well combined and heated, remove the skillet from the heat. Gently fold in the sliced green onions, allowing their fresh flavor to balance the dish.
Serve and Garnish: Spoon the warm lo mein into bowls or plates, finishing them off with a sprinkle of sesame seeds and a few cilantro leaves for a pop of color and flavor. Enjoy your quick and zesty lo mein immediately for the best experience!