Japanese Sweet Potato Oven Fries with Wasabi Aioli

Ingredients

• 2 medium Japanese sweet potatoes , scrubbed and cut into 1/2-inch thick matchsticks
• 2 tablespoons good mayonnaise
• 1 teaspoon brown sesame seeds
• ½ teaspoon wasabi paste
• dark green part of 1-2 scallions, slivered
• 3 nori crisps , slivered
• 3/8 teaspoon fine sea salt
• a few pinches togarashi or cayenne powder
• squeeze lemon juice
• 3 tablespoons sunflower oil
• 1 teaspoon black sesame seeds