Chinese Pepper Steak

Ingredients

• 2 tbsp (30 ml) soy sauce
• 1 large clove garlic, minced
• 1/4 cup (60 ml) oil
• 1 lb (.5 kg). sirloin steak, cut into thin strips
• 1 green pepper, cleaned, and cut into thin strips.
• 1 red pepper, cleaned and cut into thin strips
• 1 large spanish onion, halved, then cut into thin slices
• 1/2 cup (125 ml) diced celery (optional)
• 1 tsp (5 ml) cornstarch
• 1/4 cup (60 ml) water
• 1 large can whole tomatoes, cut into fourths