1/2 c. vinegar (white)
1/2 c. water
1/4 c. cornstarch
1/4 c. brown sugar
1/4 c. granulated sugar
1/2 c. pineapple juice

Combine vinegar, water, and sugars together and bring to a boil; combine starch and pineapple juice. Add to hot mixture and cook until thickened.