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1
Season the beef
10 Mins
No heat — room temperature, ~20°C (68°F)
In a large bowl, combine the ground beef, 40 g ground peanuts, lemongrass, garlic, shallot, fish sauce, sugar, five-spice powder and black pepper. Mix with your hands until even, then rest for 10 minutes so the flavours settle.
Mix just until combined: overworking ground beef makes the rolls tough.
Done when: Filling even, fragrant, holding together when squeezed.
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2
Roll the leaves
15 Mins
No heat — room temperature, ~20°C (68°F)
Lay a lolot leaf shiny-side down. Place a small log of filling, about 25 g, near the top of the leaf, fold the sides in and roll tightly towards the stem end, tucking the stem in to hold the roll. Repeat to make 24 rolls, then thread 4–5 rolls onto each skewer.
Roll snugly but do not squeeze: the filling swells slightly as it cooks.
Done when: 24 tight rolls, seams tucked, threaded on skewers.
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3
Make the scallion oil
5 Mins
Medium heat, ~175°C (350°F)
Heat the vegetable oil in a small pan until it shimmers, then pour it over the sliced scallions in a heatproof bowl. It will sizzle and the scallions will wilt bright green. Set aside for serving.
Pour the hot oil over the scallions, not the other way round: the sizzle is what wilts them.
Done when: Scallions wilted bright green, glistening with oil.
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4
Grill the rolls
12 Mins
Medium-high heat, ~200°C (400°F)
Brush the rolls lightly with oil and grill in batches over medium-high heat for about 3 minutes per side, turning until all sides are done, about 12 minutes in total. The leaves should turn dark and wrinkled, and the beef inside must reach 71°C (160°F).
Do not press the rolls with a spatula: pressing squeezes out the juices.
Done when: Leaves dark and wrinkled, beef 71°C (160°F) inside.
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5
Top and serve
3 Mins
No heat — serving, ~60°C (140°F)
Arrange the grilled rolls on a plate, spoon the scallion oil over them and sprinkle with the remaining 30 g crushed peanuts. Serve at once with banh hoi or rice vermicelli, fresh herbs, pickled carrot and mam nem dipping sauce.
Serve hot: the leaves lose their fragrance as they cool.
Done when: Rolls glossy with scallion oil, peanuts scattered on top.
auto_awesome Finishing Touches & Plating
Serve the bo la lot hot off the grill, glistening with scallion oil and peanuts, with banh hoi, herbs and mam nem on the side for wrapping and dipping.