2 tb SUGAR
1 ts DRY MUSTARD
3/4 ts SALT
1/2 ts CELERY FLAKES, DRIED
1/2 c RED WINE VINEGAR
1 1/2 c FINELY CHOPPED YELLOW SQUASH
2 c FINELY CHOPPED ZUCCHINI
1 c FINE CHOPPED RED BELL PEPPER
1/2 c FINE CHOPPED GREEN PEPPER
1/2 c FINE CHOPPED CELERY
2 ts CORNSTARCH