Classic Olivier Salad

Step 1: Prepare the ingredients

1. Boil the potatoes and carrots in their skins until cooked. Let them cool, then peel and dice into small cubes. 
2. Boil the eggs until hard-boiled. Once cooled, peel and chop them into small pieces. 
3. Boil the frozen peas until tender, then drain them. 
4. Finely chop the pickles (marinated cucumbers) and onion. 
5. If using chicken, cook it separately in lightly salted water until done. Let it cool, then dice into small cubes. If using ham, dice it into small cubes.

Step 2: Mix the ingredients

1. In a large mixing bowl, combine the potatoes, carrots, eggs, peas, pickles, onion, and chicken or ham.
2. Mix well to evenly distribute the ingredients.

Step 3: Seasoning

1. Add mayonnaise to the salad gradually, and gently mix until all the ingredients are coated. The amount of mayonnaise can be adjusted according to your preference. Usually, about 1 cup is used. 
2. Season with salt and pepper to taste. You can also add a pinch of sugar for a slightly sweeter taste if desired.

Step 4: Serving

1. Transfer the Olivier salad to a serving dish. 
2. If desired, garnish the salad with parsley, cucumber slices, or red caviar.

Your classic Olivier Salad is now ready to be served! You can serve it immediately or refrigerate it before serving. Enjoy your meal!