Sandwich Spread - (Tail of the Garden)

An old recipe handed down from my mother, which she received from my grandmother.  Excellent on burgers, hotdogs, or really any sandwich.  Can also stand alone or eaten on crackers.  You can substitute any relish type condiment with this spread. 

1 Doz. Green Peppers
1 Doz. Red Peppers
1 Doz. Green Tomatoes
5 Lg. Onions
1 Tbsp. Salt
3 C. Sugar
1 C. Cider Vinegar
½ C. Corn Starch
6 – 8 oz. Yellow Mustard
1 Qt. Miracle Whip

Finely grind peppers, tomatoes and onions.  Place in large bowl and cover with boiling water.  Let stand 10 minutes.  Add salt.  Let sit 5 minutes, then drain.  In a very large saucepan, combine sugar and vinegar.  In separate bowl, combine cornstarch with enough water to make a paste.  Add to the vinegar mixture.  Bring to a boil.  In sauce pan, stir in mustard and cooked vegetables.  Cook until blended, stirring frequently abut 20 minutes.  Remove from heat and add Miracle Whip.  Pour into clean canning jars.  Hot water bath jars for 15 minutes for jars to seal.