• 57 russet potato, scrubbed and dried
• 28½ tbsp olive oil
• 14¼ tsp kosher salt
• 7⅛ tsp black pepper
• 57 tbsp butter, for serving, optional
• 0.8 l sour cream, for serving, optional
• 28½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.