This recipe makes a generous serving. It will feed 4 hungry diners. Leftover filling can be kept in the fridge for up to five days – I generally like to make a large amount of filling because I eat it during the week, just topping up with more lettuce. You could turn this into a stand-alone dinner party meal by serving it alongside rice or sticky rice and adding bowls of herbs like coriander (cilantro), perilla, shiso, sliced makrut lime leaves, Thai basil, or Vietnamese mint (called Vietnamese coriander or Rau Răm in the US) for guests to add to their parcel, similar to Korean ssam wraps. The fried mung bean vermicelli topping is how it is served at many restaurants but is completely optional. You could easily subtsitute with store-bought crispy fried onions.