Great with corn chips.
About 1 quart
1/3 cup (1 medium) sweet white onion, chopped fine
2 small or one large cucumber, peeled, seeded and chopped
2 cups fresh tomatoes, peeled and diced
OR 1 can stewed tomatoes
1 4-ounce can diced green chiles
OR fresh, minced jalapeno and/or bell pepper, to taste
1/2 teaspoon celery seed
OPTIONAL sprinkle of garlic powder or one clove fresh garlic smashed
black pepper and salt to taste
2-5 tablespoons apple cider vinegar
2-4 tablespoons brown sugar
Combine all, and refrigerate overnight.
You can substitute one or more pickled jalapeno peppers for the canned diced green chiles. Wear gloves when working with fresh chiles. Remove the seeds and pith before mincing.
Adjust the brown sugar/vinegar mix to suit your taste.