Sweet and sour vegetable

Ingredients:
2 Tbsp Olive oil
1 medium size onion - Sliced
1 can pineapple
1 can bamboo shoots
1 cup stir-fry veggies (beans, carrot, broccoli..)
2 Tbsp soy sauce
2 Tbsp vinegar
2 Tbsp corn flour
1 Tbsp sugar

Method:
1) Mix soy sauce, vinegar, corn flour and pineapple juice (from the can) in a bowl and set aside.
2) In a wok - heat oil. Add onion. Fry until it turns brown.
3) Add veggies and fry for 3-4 minutes. Add bamboo shoots and fry for 3-4 minutes.
4) Dice pineapple into chunks. Add pineapple and fry for 2 minutes
5) Add the sauce mix made in step 1. Stir until it thickens.