Add black-eyed peas, corn, peppers, tomatoes, red onion, jalapeño, cilantro, and garlic to a medium sized bowl.
In a separate small bowl, whisk together vinaigrette ingredients. Pour over salsa. Stir to combine well. Cover and let marinate in fridge for two hours before serving.
Serve with tortilla chips, over grilled chicken or fish, or as a side salad.