Green Tomato Relish aka Chow Chow

12 large green Tomatoes (cored)
(I used about 20 small to med size)
4 - green bell peppers, seeded
4 - medium yellow onions (I used one very large one)
1 - red bell pepper, seeded
1 - tablespoon + 2 teaspoons yellow mustard seed
1 - tablespoon celery seed
2 - cups cider vinegar
2 - cups granulated sugar
1 tablespoon + 2 teaspoons kosher salt

Chop the tomatoes and peppers very finely. Either by hand or in small batches in a food processor. I diced up all my veggies only because I like a chunkier relish. Put the chopped vegetables in a large pot (heavy bottom non reactive pot) add the mustard seed, celery seed, vinegar, kosher salt and sugar. Stir well and bring to a simmer over medium heat. Cook stirring often and skimming as needed. ( I did not have to skim off anything) Simmer until the relish/chow chow cooks down and thickens into a relish, about 2 hours. Turn into hot sterilized jars and process in a hot water bath.