drained from pineapple, then add
water to equal a total of one cup)
In a saucepan, combine the mustard, catsup,
sugar and vinegar with
the cup of juice/water heat on stove to boiling. Then add pineapple.
Mix 2 tablespoons of cornstarch in 2 tablespoons water until creamy.
Pour cornstarch into boiling sauce and stir until thickened.