Sweet and spicy beef tapa

Ingredients

• 800 g of lean beef slices such as rump or sirloin
• 1/2 teaspoon ground ginger
• 1 1/2 teaspoon onion powder
• 1 1/2 teaspoon garlic powder
• 1 tablespoon brown sugar
• 2 tablespoons honey
• 2 tablespoon soy sauce
• 1 teaspoon salt
• 1/4-1/2 teaspoon chilli powder
• 1 tablespoon sherry
• 2 tablespoons oil
• 1 tablespoon lemon juice
• 2 teaspoons corn flour