Squash Pickle Relish
["8 c. squash, cut up", "4 bell peppers, chopped", "3 onions, chopped", "3 c. sugar", "2 tsp. celery salt", "2 tsp. mustard seed", "2 c. vinegar"]
["Cook all together until tender.", "Process for 5 minutes in water bath cooker."]
["bell peppers", "onions", "sugar", "celery salt", "vinegar"]