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Air-Fried Crispy Sweet Potatoes with Porcini Mayonnaise
the Breville Test Kitchen

the Breville Test Kitchen

Air-Fried Crispy Sweet Potatoes with Porcini Mayonnaise

Golden, caramelized, and crisp-edged, these air-fried sweet potatoes channel the irresistible crunch of tempura and the comforting fluff of a roast potato. No deep frying required! Then along comes the porcini mayo - rich, silky, and loaded with umami. Suddenly, your humble side dish steals the spotlight.
time

1 hr 15 mins total time

activetimeIII

20 mins active time

easy

Easy

user

Serves 6-8

Ingredients


Measurements:

  • water icon
    8 cups water

    plus 5½ fl oz extra, divided

  • kosher salt icon
    3 tbsp kosher salt

    plus ½ tsp extra

  • white vinegar icon
    3 tbsp white vinegar
  • sweet potato icon
    2½ lb sweet potatoes
  • cornstarch icon
    7 tbsp cornstarch

    divided

  • Cooking spray icon
    Cooking spray

For the porcini mayonnaise

  • mayonnaise icon
    ¾ cup (6 oz) mayonnaise
  • dried porcini mushroom powder icon
    1 tbsp dried porcini mushroom powder
  • apple cider vinegar icon
    ½ tsp apple cider vinegar
  • kosher salt icon
    ¼ tsp kosher salt
  • freshly ground black pepper icon
    Freshly ground black pepper

    to season

Instructions

  • 1Place the water, salt and white vinegar in a large saucepan. Cover and bring to a boil. Meanwhile, continue to the next step.
  • 2Peel and cut the sweet potatoes into irregular 1-inch pieces (approximately 2 oz-2½ oz each).
  • 3Once boiling, add the sweet potatoes to the water. Cover and boil for 10 minutes, then drain. The potatoes will still be slightly undercooked. Meanwhile, continue to the next step.
  • 4To make the cornstarch batter, combine 4 tablespoons of the cornstarch and ½ cup (4 fl oz) of the extra water in a bowl, transfer to a small saucepan and whisk until combined. Whisk over medium heat for about 1 minute or until thickened. Transfer to a large bowl. To make the cornstarch slurry, place the remaining 3 tablespoons of the cornstarch and the remaining 3 tablespoons extra water in a bowl. Stir together with a fork until combined. Add the slurry to the batter and whisk until combined and paste-like consistency.
  • 5Insert the wire rack into position 8, place the roasting pan on the rack to catch any drips during cooking. Set the oven to Air Fry, Super Convection, 450°F, for 45 minutes, enable Rotate Remind and press Start to preheat. Meanwhile, continue to the next step.
  • 6Place the sweet potatoes in the bowl with the cornstarch mixture. Stir well until the sweet potatoes are evenly coated.
  • 7Place a piece of parchment paper on the countertop and place the air fry basket on top. Spray the basket with cooking spray. Using tongs, place the sweet potatoes in the basket evenly spaced apart. Spray with oil and season with ¼ teaspoon salt. Turn the pieces over, spray with oil and season with the remaining ¼ teaspoon salt.
  • 8Once preheated, insert the air fry basket into rack position 3, reduce the temperature to 400°F and Air Fry for 45 minutes. When the Rotate Remind signals, rotate the basket, insert into rack position 1 and continue cooking.
  • 9To make the porcini mayonnaise, place all the ingredients in a small bowl and whisk to combine. Set aside until required.
  • 10The sweet potatoes should be dry to the touch and golden with crispy edges. If not, air fry them a little longer.
  • 11Pile them high on a serving plate and bring on the porcini mayo! Either spoon it generously over the top or serve on the side for dipping, depending on your vibe.
Side dish/Accompaniment
Main course
Gluten Free
Vegetarian
Dairy Free
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