There is no one-size-fits-all answer to this question, as the best black bean relish recipe will vary depending on personal preferences. However, some key ingredients that could be included in a black bean relish recipe include black beans, diced tomatoes, onions, peppers, and cilantro.
Black beans should be canned and they should be rinsed and drained.
Serrano chile should be seeded and finely chopped.
~Mix all ingredients.
Cover and refrigerate until chilled, about 1 hour.
Makes about 2 1/2 cups relish.