Step 1

In a saucepan over medium-high heat whisk together the pineapple juice, vinegar, brown sugar, ketchup, and soy sauce together.

Step 2

In a small bowl whisk together the cornstarch and water to make a slurry.

Step 3

Add the cornstarch to the saucepan and whisk it in.

Step 4

Bring to a simmer then reduce to medium-low until it thickens