Sweet And Sour Stir-Fried Beef
["1 lb. beef flank steak", "1 Tbsp. cornstarch", "1 Tbsp. cold water", "3 Tbsp. vegetable oil", "1 medium onion, cut in 1-inch pieces", "1 (8 1/4 oz.) can pineapple chunks, drained", "1/2 c. water", "1/4 c. sugar", "1/4 c. white vinegar", "1 Tbsp. instant chicken bouillon", "1 Tbsp. soy sauce", "1 medium green pepper, cut in 1-inch pieces", "2 medium tomatoes, cut into eighths"]
["Trim excess fat from beef; cut beef with grain into 2-inch strips.", "Cut strips across grain into 1/8-inch slices.", "Mix cornstarch and 1 tablespoon water.", "Heat oil in 12-inch skillet or wok over medium-high heat until hot.", "Add beef and onion; cook and stir until beef is brown, about 3 minutes.", "Stir in pineapple, 1/2 cup water, the sugar, vinegar, instant bouillon and soy sauce. Heat to boiling.", "Stir in cornstarch mixture.", "Cook and stir 1 minute. Stir in green pepper and tomatoes; cook and stir 1 minute. Serve with hot, cooked rice.", "Makes 5 servings."]
["beef flank", "cornstarch", "cold water", "vegetable oil", "onion", "pineapple", "water", "sugar", "white vinegar", "instant chicken", "soy sauce", "green pepper", "tomatoes"]