In a large bowl, whisk together mayonnaise, sour cream, apple cider vinegar, sugar, kosher salt, and freshly ground black pepper until smooth. Set aside.
Bring 2 quarts of water to a boil. Blanch the frozen peas by boiling for 2 minutes. Drain and rinse them with cold water to stop the cooking process. Set aside.
Add the chopped hard-boiled eggs, cheddar cheese, crumbled bacon, sliced green onions, chopped dill, and blanched peas to the bowl with the dressing. Stir well to combine all the ingredients evenly.
Cover the bowl with plastic wrap and place it in the refrigerator. Chill for at least 3 hours before serving.
Notes
This pea salad is perfect for picnics or potlucks. The flavors meld beautifully after chilling, making it a delightful addition to any meal.