Pineapple juice provides the fruity note of a classic Chinese-American sweet and sour sauce whose balance is a mix between brown sugar and rice vinegar.
- 1/2 cup ketchup
- 2 tablespoons pineapple juice
- 2 tablespoons brown sugar
- 1 tablespoon rice vinegar
- 1 tablespoon soy sauce
Whisk together ketchup, pineapple juice, brown sugar, vinegar, and soy sauce in a small bowl. Use immediately or transfer to an airtight container and store in refrigerator for up to two weeks.