Combine onion, green pepper, and 1/2 teaspoon salt in a medium saucepan; add water to cover. Bring to a boil; cover and reduce heat. Simmer 10 minutes. Drain thoroughly.
Combine cooked vegetables and tomatoes; mix well. Add remaining salt, vinegar, sugar, and pepper, stirring well. Cover and refrigerate at least 1 hour.
Oxmoor House Homestyle Recipes
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