Sweet & Sour Sauce (Chieko)

1 cup sugar
1 cup water
1⁄2 cup ketchup
1⁄4 cup rice vinegar
a few drops lemon juice
1 tbsp cornstarch
3 tbsp water

Combine sugar, water, ketchup, vinegar and lemon juice; bring to boil. Dissolve corn starch in water and add to mixture to thicken. Cook until clear. Pour over thinly sliced uncooked bell peppers, onions and pineapple chunks. Serve over rice.