To prepare shrimp, combine the first 5 ingredients in a medium saucepan. Bring to a boil; add shrimp, and cook 3 minutes or until shrimp are done. Drain and rinse with cold water; cool. Discard onion, garlic, and herbs.
To prepare salad, combine oil, salt, black pepper, and minced garlic; stir well with a whisk. Add shrimp, bell pepper, and remaining ingredients, and toss well. Cover and chill 1 hour.
Note: Each serving provides 84 micrograms of folate