
Cut potatoes into ¼-inch sticks. Soak in cold water 30 minutes, then drain and pat bone-dry.
Toss with olive oil, cornstarch, and salt until evenly coated.
Air fry at 380°F for 18-22 minutes, shaking every 6 minutes until deeply golden.
Immediately toss hot fries with garlic butter, truffle oil, and Parmigiano. Top with parsley.
Tip: The 30-minute soak removes surface starch — it's the difference between limp and shattering fries.
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