Sweet & Sour Chicken with Pineapple and Red Onion

I decided to try this recipe from Jamie's Cookbook despite the fact that I'm not a fan of fruit in my dinners. I must admit I liked the bites I took without pineapple better, but even those with it were pretty dang good. I really liked the overall flavor of the dish...especially with some soy sauce on top.

Ingredients:
2 chicken breasts (thinly sliced)
1 T soy sauce
1 T rice vinegar
2 T vegetable oil
1 medium red onion (long, thin strips)
20oz can pineapple tidbits, drained and reserve some liquid
3 medium scallions (green parts: ¼" lengths & white parts: minced)
1 T garlic (minced)
1 T fresh ginger (minced)
1 recipe sweet and sour stir-fry sauce (see below)

Directions:
-Toss the chicken with the soy sauce and vinegar in a medium bowl; set aside for 15 minutes, tossing once or twice.
-Heat skillet over high heat for 3 to 4 minutes. Add 1 T oil and swirl it so the oil evenly coats the bottom of the pan. Heat the oil until it just starts to shimmer and smoke.
-Drain the chicken and add it to the pan. Stir-fry until seared and about three-quarters cooked, 2 ½ to 3 minutes. Scrape the cooked chicken and all of the liquid into a bowl. Cover and keep warm.
-Let the pan come back up to temperature, 1 to 2 minutes. When it is hot, drizzle in 2 teaspoons oil. When the oil just starts to smoke, add the onions and stir-fry until just tender-crisp, 1 to 2 minutes. Add the pineapple and cook 1 minute. Add the scallion greens and cook 15 to 30 seconds.
-Clear the center of the pan and add the white parts of the scallions, garlic, and ginger. Drizzle with ½ teaspoon oil. Mash into the pan with the back of a spatula. Cook until fragrant but not colored. Remove the pan from heat and stir the scallions, garlic, and ginger into the vegetables for 20 seconds.
-Return the pan to the heat and add the cooked chicken. Stir in the sauce and stir-fry until the ingredients are well coated with sauce and sizzling hot, about 1 minute. Serve immediately with rice.

Sweet and Sour Stir Fry Sauce Ingredients:
3 T red wine vinegar
3 T sugar
1 ½ T tomato sauce
1 ½ T pineapple juice
¼ t salt
*Combine all the ingredients in a small bowl and set aside.