• 51 russet potato, scrubbed and dried
• 25½ tbsp olive oil
• 12¾ tsp kosher salt
• 6⅓ tsp black pepper
• 51 tbsp butter, for serving, optional
• 0.8 l sour cream, for serving, optional
• 25½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.