This sweet and sour sauce is as easy to make as they come. We don't think that it matches restaurant-quality sweet and sour sauce exactly, but for the speed and ease it is definitely worth making (and eating!).
1/2 cup lemon juice
1/2 cup ketchup
1/2 cup crushed pineapple (with the juice)
1/3 cup brown sugar
Make stir fry however you normally would. We were making stir fry to use up a lot of stuff we had in our fridge so we realize the pictures might not fit a normal stir fry that goes along with sweet and sour sauce. This time we included mushrooms, corn, sprouts, broccoli, bell pepper, carrot and onions. We didn't even add any meat but often we do and we think it does add an extra level of tasty.
While you cook the vegetables it is a good idea to also make rice.
When you vegetables are almost done cooking, mix all four ingredients together in a bowl. Give it a good stir (to make sure the brown sugar does not get stuck to the bottom) and then pour it over your stir fry mix. Mix well and cook for about 2-5 minutes or until it thickens.
Serve over rice immediately.