Slice all vegetables into 1/4-inch thin slices and place in cheesecloth. Alternate tomatoes, onions and peppers, sprinkle salt between each layer and let stand overnight. NOTE: do not let vegetables come in contact with juice, you must support it and let juices drain from vegetables. The next day place all vegetables into a large pot with enough apple cider vinegar to cover and place the 1/2 cup of spices tied in cheesecloth into the pot. Cook slowly for 2 hours or until onions are tender. Seal in clean jars using the hotpack method.