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1
Rest the Batter
30 Mins
Room temperature
Whisk the rice flour, tapioca starch, water, salt and 5 ml of the oil together until completely smooth, with no lumps. Cover and rest for 30 minutes, then whisk again — the batter should pour like single cream and coat the back of a spoon in a thin film.
If the batter feels thick after resting, whisk in water a tablespoon at a time.
Done when: A smooth, thin batter with no lumps and no skin on top.
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2
Cook the Pork Filling
8 Mins
Medium-high heat, about 180°C (350°F)
Heat the remaining oil in a pan over medium-high heat. Fry the onion for 2 minutes until soft, then add the ground pork and break it up with a spoon. Cook for 5 minutes, stirring, until the pork is browned and no pink remains, then stir in the chopped wood-ear mushrooms, fish sauce, pepper and sugar and cook 1 minute more. Tip into a bowl.
Break the pork into small crumbs — large lumps tear the delicate sheets.
Done when: Pork browned through with no pink, the thickest crumb at 71°C (160°F).
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3
Mix the Nuoc Cham
3 Mins
Room temperature
Stir the fish sauce, sugar and water together until the sugar dissolves, then add the lime juice, minced garlic and sliced chili. Taste and adjust: it should be sweet, sour and salty at once, light enough to sip. Set aside in a small bowl for each eater.
Add the lime juice last so its fresh sourness stays bright.
Done when: A clear, pale-gold sauce that tastes balanced, not harsh.
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4
Set Up the Steamer
5 Mins
Boiling water, 100°C (212°F)
Bring a wide pot of water to a rolling boil and fit a steamer tray, a flat plate, or a piece of cloth stretched over the pot. Brush the steaming surface lightly with oil. Keep a lightly oiled plate beside you for the finished sheets, and have the filling bowl within reach.
A wide, flat steaming surface is what makes thin, even sheets — a small pot makes thick, uneven ones.
Done when: Steady steam rising and a lightly oiled surface ready to go.
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5
Steam and Roll the Sheets
15 Mins
Boiling water, 100°C (212°F)
Ladle about 60 ml of batter onto the steaming surface and tilt it so it spreads into a thin, even circle. Cover and steam for 40 to 60 seconds until the sheet turns translucent and bubbles slightly. Lift the sheet onto the oiled plate, spoon a line of filling across one edge, and roll it up gently. Repeat until the batter is used up, about 16 rolls.
Work fast while each sheet is hot — cold sheets stiffen and crack when rolled.
Done when: Translucent, silky sheets rolled around the filling without tearing.
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6
Cut and Serve
4 Mins
Serve warm
Cut each roll into 3 or 4 bite-sized pieces and arrange on plates. Scatter the fried shallots and herbs over the top, add the cucumber and cha lua slices beside them, and serve immediately with a small bowl of nuoc cham for each person to dip or pour over.
Cut with a lightly oiled knife so the soft rolls do not stick to the blade.
Done when: Warm, glossy rolls with crisp shallots, fresh herbs and a bowl of dipping sauce.
auto_awesome Finishing Touches & Plating
Eat banh cuon the moment it is plated, while the rolls are still warm and silky. Dip each piece in nuoc cham or pour the sauce over the plate, and take a bite of cucumber and herbs with every mouthful — the crunch and the sour sauce are what keep the soft rolls from feeling heavy.