Step 1: Prepare the Vegetables: Dice the celery, red onion, and green bell pepper into small, uniform pieces. Mince the garlic and chop the fresh parsley. Ensuring uniform size allows for a balanced texture throughout the salad.
Step 2: Combine the Ingredients: In a large bowl, combine the rinsed and drained kidney beans, diced celery, red onion, and green bell pepper. Add the chopped fresh parsley. This creates the base for the kidney bean salad.
Step 3: Prepare the Dressing: In a separate small bowl, whisk together the olive oil, red wine vinegar, Dijon mustard, minced garlic, salt, and black pepper. Whisking thoroughly emulsifies the dressing, creating a cohesive blend of flavors.
Step 4: Dress the Salad: Pour the dressing over the kidney bean mixture and gently toss to combine. Ensure all ingredients are evenly coated with the dressing for maximum flavor.
Step 5: Chill and Serve: Cover the bowl and refrigerate for at least 30 minutes to allow the flavors to meld. Chilling enhances the taste and allows the dressing to fully permeate the ingredients. Serve chilled as a side dish or a light lunch.
Optional Tips: For a spicier kick, add a pinch of red pepper flakes to the dressing. If red wine vinegar is not available, apple cider vinegar or white wine vinegar can be used as substitutes. Adding a can of drained corn will offer sweetness and different texture.