• 7 russet potato, scrubbed and dried
• 3½ tbsp olive oil
• 1¾ tsp kosher salt
• ¾ tsp black pepper
• 7 tbsp butter, for serving, optional
• 105 ml sour cream, for serving, optional
• 3½ tbsp chives, chopped, for serving, optional

Metric measurements are approximate conversions.