Skip the takeout! This crispy sweet and sour chicken recipe features juicy fried chicken, bell peppers, and pineapple tossed in a tangy homemade sauce made with a secret broth infusion.
Toss chicken with 1 teaspoon chicken bouillon powder and 2 teaspoons Chinese cooking wine (or 1 tsp soy sauce). Let sit while you prep the sauce base and batter.
Make the Sauce Broth
In a small saucepan, add ½ red bell pepper, ½ green bell pepper, ½ onion, 1 inch piece fresh ginger, 1 cup chicken stock, and ½ cup cranberry juice.
Simmer uncovered for 30 minutes. This is your flavor infusion.
Mix the Tempura Batter While Broth Simmers
In a medium mixing bowl, whisk ¾ cup all-purpose flour, ¼ cup cornstarch, and ¼ teaspoon baking soda.
Stir in 1 egg and 1 cup club soda or seltzer water until just combined (lumpy is fine).
Set in the refrigerator to chill batter while heating oil. Cold tempura batter sticks better and creates a thicker crust.
First Fry
Fill wok with 2–3 inches of oil and heat to 350°F (175°C).
Dip marinated chicken pieces into batter, then fry in batches until golden (3–4 minutes per batch). Use a fork, spoon, or pair of chopsticks to separate the pieces in the oil to prevent clumping.
Cook until they are golden. Don't overcook here or chicken will be dry. Drain on a wire rack.
Second Fry
Turn up the heat on your oil until its between 380-390°F.
Flash fry the chicken for about 60 seconds to get extra crispy. This second fry removes the excess moisture and helps achieve that crunchy texture.
Flash Fry the Veggies
After all of the chicken is fried, turn off the heat. In the same oil, flash fry (30 seconds) ½ red bell pepper, ½ green bell pepper, and ½ onion for the final assembly. You don't need to keep the heat on because there is plenty of residual heat to cook the veggies. Remove from oil and drain.
Make the Sauce
In another small saucepan, combine 1 cup sugar and ½ cup water. Heat over medium until dissolved and slightly thickened (3–4 minutes).
Stir in ½ cup white vinegar, simmer 1 minute.
Strain the sauce broth (from Step 2). Discard solids.
Add sauce broth to sugar-vinegar mixture. Whisk in ¼ cup ketchup until smooth and glossy.
Add cornstarch slurry and simmer 1–2 minutes until glossy and thick.
Combine & Serve Immediately
In a large mixing bowl, add fried chicken, fried veggies, 1 can of pineapple chunks, and sauce. Toss to coat or fold with a rubber spatula.