Heat a wok-shaped skillet or large non-stick skillet over high heat. When pan is very hot, add oil, (it will smoke a bit) then, immediately add the snow peas, pepper, mushrooms, scallions, and bean sprouts. Stir fry for 1 minute to flavor the oil, then add the ginger and garlic, and stir-fry 2 minutes. Add the cooked noodles and toss with to combine. Add the soy sauce and toss the ingredients to coat noodles evenly with sauce. Transfer the lo mein to a serving platter and garnish with a drizzle of toasted sesame oil.
Wok oil is infused with ginger and garlic and is widely available on the International Foods aisle of the market. Cooked shredded pork, chicken, or small de-veined shrimp may be added to this dish in any combination.