• 17 russet potato, scrubbed and dried
• 8½ tbsp olive oil
• 4¼ tsp kosher salt
• 2⅛ tsp black pepper
• 17 tbsp butter, for serving, optional
• 0.3 l sour cream, for serving, optional
• 8½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.