I love sweet and sour chicken but rarely find it exactly how I like it when I order it from restaurants so I came up with my own recipe. This isn't an authentic chinese recipe if that is what you're looking for but my kids and I love this. I always serve it over steamed white rice.
In a saucepan, combine 1 1/2 cups pineapple juice,maraschino cherry juice, vinegar, and sugar. Heat to boiling. Turn off heat. Combine 1/4 cup cornstarch and 1/4 cup water, stir until mixed well and smooth; slowly stir into saucepan. Continue stirring until mixture thickens. Remove from burner and cover.
Combine flour, oil, 2 tablespoons cornstarch, salt, white pepper, and egg. Add 1 1/2 cups water gradually to make a thick batter. Stir until just mixed and add chicken and stir until well coated.
Heat oil in a deep skillet to 360 degrees F (180 degrees C). Fry chicken pieces in a few batches in hot oil 10 minutes, or until golden brown. Drain on paper towels.
Add pineapple chunks, cherries and green pepper to each plate as you're serving the chicken, spoon warm sweet and sour sauce over it.