I think it works best if you can make the sauce a couple of hours ahead and then combine it with the salad just before serving. This allows the flavors to develop. As to the bean salad mix and match as you want.
Course
Salad
Ingredients
Bean Salad
2canskidney beansrinsed
1cansweet cornrinsed
1canchick peasrinsed
1red bell pepperchopped
2stalkscelerychopped
red oniondiced, to taste
Dressing
3/4cupssour cream
1/4cupmayonnaise
1/4cupcider vinegar
1tablespoondry mustard
1teaspoonsugar
2teaspoonscelery seed
Saltas needed
Pepperas needed
Instructions
Dressing
Mix all ingredients until smooth. Season with salt and pepper as needed. If possible, set aside for several hours to allow the flavors to combine.
Salad
Drain and rinse the liquid from the kidney beans, corn and chick peas. Combine all ingredients in a bowl. Just before serving pour the dressing over the salad mix and combine well.