Fan tuan stuffed with pickled vegetables and pork floss is a portable, protein-rich breakfast. A fresh, family street food staple with bold flavors.
Beat the eggs with 1 tsp of soy sauce; heat a nonstick skillet over medium heat and scramble until just set, about 2–3 minutes. Transfer to a plate and let cool.
Slice the fried Chinese crullers in half lengthwise for easier wrapping. Lightly steam or microwave the crullers for 10 seconds if they are not fresh, to restore crispness.
In a small bowl, toss the pickled mustard greens with the remaining soy sauce, sesame oil, and sugar. Mix well and let marinate for at least 10 minutes to balance flavor and acidity.
Lay a square of plastic wrap on a clean surface; spread 3/4 cup of slightly warm cooked rice into a 7-inch square, pressing gently to achieve an even thickness.
Layer one half of a cruller, a quarter of the scrambled egg, 1/4 cup pork floss, and a generous spoonful of seasoned pickled vegetables in the center, then use the wrap to fold the rice around the fillings. Form tightly into a roll, twisting the ends of the plastic wrap to secure, and let set 2 minutes before unwrapping and slicing.