Potato Salad, Russian II

Ingredients

• 1/2 cup hard-boiled chopped egg
• 1 cup cooked and diced potato
• 1 cup cooked and diced beets
• 1 cup green cooked peas
• 1/4 cup shredded carrots
• 3/4 cup plain yogurt
• 1/2 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon cider vinegar
• 6 chopped scallions