• 23 russet potato, scrubbed and dried
• 11½ tbsp olive oil
• 5¾ tsp kosher salt
• 2¾ tsp black pepper
• 23 tbsp butter, for serving, optional
• 0.3 l sour cream, for serving, optional
• 11½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.