Ingredients:

• 1 large (10 to 12-ounce) russet potato
• 1 teaspoon olive oil, optional
• Pinch of kosher salt, optional
• Optional toppings
• 1 tablespoon butter
• 1/4 cup shredded cheddar cheese
• 1 tablespoon sour cream
• 1 teaspoon minced chives
• Salt and pepper, to taste