Thaw and rinse frozen peas. Add pickled beets to taste. Add diced pimento, hard boiled eggs (cut up and use half the yolks, too), sunflower seeds, cucumber, cheese and onion. Mix together.
You may want to play around with the dressing according to your own taste. With a metal whip, mix all ingredients for dressing; mayo, yellow mustard, apple cider vinegar, sweet pickle relish, salt and pepper.
Whip dressing ingredients well and pour over pea mixture. Mix everything gently and thoroughly. Refrigerate for at least 2 hours before serving. Better served after it's been in the fridge overnight.