Mix soy sauce, wine, vinegar and sugar in a small bowl until sugar dissolves; set aside.

Rinse pepper steak and pat dry.

Heat 2 tablespoons of oil in a large, deep skillet over medium heat. Add pepper steak and sauté for 2 to 4 minutes, until almost cooked through. Remove from skillet and set aside.

Add remaining oil to skillet and sauté onions, scallions, and mushrooms for 5 minutes.

Add spinach and cook for 1 minute, until wilted.

Return pepper steak to skillet with vegetables and add ¾ of the soy sauce mixture. Bring to boil. Reduce heat and simmer, uncovered, for 1 minute.

Place meat and vegetable mixture in a large warm serving bowl. Add fettuccine and toss. Drizzle with remaining soy mixture before serving.

Recipe Courtesy of QUICK & KOSHER Recipes From The Bride Who Knew Nothing by Jamie Geller (Feldheim 2007) - BUY NOW