• 63 russet potato, scrubbed and dried
• 31½ tbsp olive oil
• 15¾ tsp kosher salt
• 7¾ tsp black pepper
• 63 tbsp butter, for serving, optional
• 0.9 l sour cream, for serving, optional
• 31½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.