Crispy Roasted Potatoes Recipe - Williams-Sonoma Australia

Ingredients

• Salt and freshly ground pepper
• 1.5 kg small yellow potatoes
• 1/3 cup (80 ml) extra virgin olive oil, plus more as needed
• 1/4 cup (60 ml) extra virgin olive oil
• 2 large leeks or 6 small leeks, white and light green portions, rinsed well and chopped
• 1 Tbs. unsalted butter
• 2 garlic cloves, minced
• 1 egg plus 1 egg yolk
• 1 cup (250 ml) canola oil
• 1 tsp. Dijon mustard
• Juice of 1 lemon
• 1 1/2 Tbs. chopped fresh tarragon, plus chopped and whole leaves for garnish
• Flaky sea salt