Preparation:
Mix 2 teaspoons cornstarch, soy sauce, 1 teaspoon sugar and a pinch of salt and pepper;
Add your sliced sirloin and massage the marinade into the sirloin slices.
Let your sirloin marinate for 10 to 15 minutes then drain the sirloin;
Fry in small amount of hot oil over high heat until meat loses red color.
Push to outer edge of pan.
Add small amount of oil; cook onion, green peppers and celery for 5 minutes.
Make paste of 2 tablespoons cornstarch and water; stir in 1 teaspoon sugar, msg and salt and pepper to taste.
Add to sirloin mixture; cook stirring until sauce is clear, add tomatoes and green onions, remove from heat.

Serve.

• Ingredients you’ll need:
• 1 pound sirloin tip — sliced 1/8 in.
• 1 onion — sliced
• 2 green peppers — sliced
• 2 stalks celery — sliced
• 3/4 a tomato — wedges
• 3/4 green onions — 2-in. strips
• Cornstarch
• Soy Sauce
• Sugar
• Pepper
• Oil (Peanut)
• 1/4 cup cold water

• Optional Indgredients – for a more Asian Flavor:

• 1tsp Ginger –diced
• 1tsp Pepper -red
• 1 clove Garlic –diced
• replace water with beef bouillon
• 1/2 teaspoon MSG (optional)