Step 1

Toss together the peas, eggs, red onion and celery in a medium sized bowl.

Step 2

In a separate small bowl, mix together the mayonnaise, sour cream, vinegar and mustard.

Step 3

Drizzle the mayonnaise mixture over the peas, and gently stir to combine. Season with salt and pepper to taste.

Step 4

Chill in fridge for 30 minutes to let the flavors come together.