Mother's Potato Salad

INGREDIENTS

• 5 pounds whole russet potatoes
• 5 eggs
• 1 1/2 cups mayonnaise (such as Hellman's®)
• 2 tablespoons prepared yellow mustard (such as French's ®)
• 1 small onion, chopped
• 3 stalks celery, chopped
• 7 sweet gherkins, chopped
• 25 pimento-stuffed green olives, sliced
• 1 pinch salt to taste
• 1 green bell pepper, sliced (optional)