Incredibly delicious CHRISTMAS salad! They were all delighted!

Ingredients

4 eggs
sal. sal
1 cup frozen peas
5 cooked potatoes (500-600 g) (17-21 oz)
1/2 red onion
a bunch of dill
spring onions
2 tablespoons of yogurt
2 tablespoons of mayonnaise
Black pepper and salt to taste
1 teaspoon of French mustard