• 11 russet potato, scrubbed and dried
• 5½ tbsp olive oil
• 2¾ tsp kosher salt
• 1⅓ tsp black pepper
• 11 tbsp butter, for serving, optional
• 165 ml sour cream, for serving, optional
• 5½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.