Sweet and Sour sauce recipe: 1 cup water, 1 1/4 cup sugar, 3/4 cup vinegar and 1/4 cup orange juice. Mix together and boil in saucepan. Once boiling add cornstarch mixed with cold water to boiling mixture. Continue adding cornstarch/water till desired consitency is reached. I used about 2 tsps cornstarch with 1 tbsp water. A few drops of food coloring to add color. Of course I used red so it would resemble the Chinese Buffett sauce.
So many people don't attempt making asian dishes because the sauces are too complex. Here is a list of sauces you can make without stress. I have listed them in the "Directions" sections so as to not copy/paste so many times. :)