Making Chow Chow is simple if you follow these steps:

1. Prepare Vegetables: Wash and chop the green tomatoes, bell peppers, onions, and celery. Aim for uniform pieces for even pickling.
2. Mix Vegetables: In a large bowl, combine all the chopped vegetables. Sprinkle with salt and let them sit for 1 hour. This helps to draw out excess moisture.
3. Rinse and Drain: After an hour, rinse the vegetables thoroughly to remove excess salt. Drain well.
4. Combine Ingredients: In a large pot, mix vinegar, sugar, mustard seeds, turmeric, celery seeds, red pepper flakes, and black pepper. Stir until the sugar dissolves.
5. Add Vegetables: Bring the mixture to a boil, then add the drained vegetables. Stir well to incorporate all ingredients.
6. Simmer: Reduce the heat and let it simmer for 15-20 minutes, stirring occasionally. You want the vegetables to soften slightly without losing their crunch.
7. Jar the Relish: Carefully ladle the hot relish into sterilized jars, leaving about ½ inch headspace. Seal them with sterilized lids.
8. Cool Down: Allow jars to cool at room temperature before refrigerating.
9. Let Flavors Meld: For the best flavor, let the relish rest in the refrigerator for at least 24 hours before using.

By following these steps, you can prepare an incredible batch of Chow Chow North American Pickled Relish that is ready to enhance your meals!