Step 1

If you have time, freeze the place the steak for about 15 minutes to firm and be easier to cut. Slice the beef across the grain into thin strips, a scant 1/4 inch thick, about 1 1/2 inches wide, and about 3 inches long. You may need to angle the knife to achieve the ideal width. Set aside.

Step 2

In a bowl, combine the garlic, shallot, brown sugar, salt, pepper, fish sauce, soy sauce and oil. Stir to dissolve the sugar. Add the beef and use your hands to massage the seasonings into the beef, making sure that each slice is well coated. Cover with plastic wrap and marinate at room temperature for 1 hour. Or, refrigerate overnight, letting the beef sit out for 30 minutes to remove the chill before grilling.

Step 3

While the beef marinates, make the scallion oil, if you haven’t done so. Before grilling the beef, prepare the banh hoi noodles. Use scissors to halve each piece of the noodles into pieces the size of playing cards. Arrange them on 2 platters in overlapping layers, with some scallion oil atop each piece of noodle; leftover scallion oil can be served on the side for extra richness. Cover the noodles, and set aside to prevent drying while you cook the beef. Arrange the lettuce, herbs and cucumber on 1 or 2 plates and set at the table. Put the dipping sauce in a communal bowl or individual dipping sauce bowls and set at the table.

Step 4

Prepare a charcoal or preheat a gas grill to medium (you can hold your hand over the rack for no more than 4 to 5 seconds). To broil the beef, position a rack about 4 inches from the heat source and preheat the oven for 20 minutes so it is nice and hot.

Step 5

I usually grill the meat as individual pieces, working the meat with tongs to turn them frequently. If you prefer, skewer the meat on soaked bamboo skewers (soak 16 to 20 skewers in water for 45 minutes) so that the pieces are easier to grill; you can serve the meat on the skewers or remove them from the skewers. Whether grilling or broiling, cook the beef for 5 to 7 minutes, turning frequently, until browned and a little charred.

Step 6

Arrange on a platter and serve with the noodles, lettuce and herbs, and dipping sauce. To eat, invite guests to take a palm-size piece of lettuce, add few leaves of fresh herbs, a piece of banh hoi noodle, and a piece of beef. Bundle up the parcel, dip it into the sauce and deliver to the mouth.