Gingered Beef And Pineapple Stir-Fry
["1 lb. lean flank steak", "1 Tbsp. peeled, minced gingerroot", "2 tsp. sugar", "2 Tbsp. low-sodium soy sauce", "2 Tbsp. sherry", "3 cloves garlic, minced", "2 tsp. dark sesame oil", "2 tsp. cornstarch", "1 Tbsp. plus 1 tsp. rice vinegar", "2 c. cubed fresh pineapple", "1 c. diagonally sliced green onions", "1 c. thinly sliced fresh mushrooms", "1 c. fresh snow peas", "1 c. (3-inch) julienne-cut red bell pepper strips", "6 c. hot cooked somen (white wheat noodles) or angel hair pasta, cooked without salt or fat"]
["Trim fat from steak.", "Cut steak lengthwise with grain into 1/4-inch slices; cut slices in half crosswise.", "Combine steak and next 5 ingredients in a large zip-top heavy-duty plastic bag.", "Seal bag and marinate in refrigerator 2 hours, turning bag occasionally. Remove steak from bag; discard marinade."]
["lean flank steak", "gingerroot", "sugar", "soy sauce", "sherry", "garlic", "dark sesame oil", "cornstarch", "rice vinegar", "pineapple", "green onions", "mushrooms", "fresh snow peas", "red bell pepper", "hot cooked somen"]