In a hot wok, coat with canola oil and brown the garlic. Add the choy sum and season. Add chicken stock and cook for only 3 minutes. Plate up and cover with truffles. The steam of the dish will heat the truffles to release its oil and flavor. If using the shiitakes, add them after the garlic, before adding the choy sum. Garnish with truffle oil.
Recipe Courtesy of Ming Tsai