Bánh Xèo (Vietnamese Sizzling Crêpes)

Bánh xèo is a Vietnamese compound word: bánh covers a broad range of foods including cakes, pastries, and this kind of savoury crêpe; xèo is an onomatopoeia — it is the sound the batter makes the moment it hits hot oil. The xèo can be roughly pronounced 'say' (with a falling tone). If you are not hearing that sound when you pour the batter in, the oil is not hot enough. In Central Vietnam the dish is called bánh khoái, meaning roughly 'happy cake' or 'joyful eating'. The southern style is larger; the central style is smaller and wrapped in rice paper.

Four reasons crêpes come out soft: the pan was not hot enough when the batter went in; too much batter was used; the lid was left on too long; the crêpe was folded before it was ready. The solutions: heat the pan on high for 2 full minutes before adding oil. Pour less batter than seems right and swirl immediately to cover the base thinly. Cover with a lid for only 2 minutes, then remove. Cook uncovered at high heat for another 3 to 4 minutes until the edges are golden and lifting. The crêpe is ready when you can shake the pan and it slides. Authentic restaurant crêpes are made in very hot woks over charcoal with generous oil — the home stove version requires maximum heat to compensate.

Beer and sparkling water both contain dissolved carbon dioxide. When the batter hits the hot oil, the CO2 expands and creates tiny pockets of air in the crêpe surface — this is the same principle as using carbonated water in tempura batter. The result is a lighter, more porous, crispier texture than still water alone. Beer also adds a faint malty note. Sparkling water achieves the same textural effect without the alcohol. Both are non-traditional additions that home cooks use as improvements over straight water. The batter is also better when rested overnight in the fridge — the starch hydrates more fully and the crêpe fries crispier.

The traditional way is interactive and requires no cutlery. Tear off a piece of the folded crêpe — roughly the size of a playing card. Place it on a large lettuce leaf, add a few leaves of fresh mint and cilantro. Roll the lettuce leaf into a loose cigar shape. Dip into nước chấm and eat in one or two bites. The roll should not be tight or neat — it is meant to be a rustic bundle. Some versions also use a square of dampened rice paper as the outer wrap, folded around the whole bundle. In the south the herbs are generous; in the north the wrapping is simpler. The ritual of wrapping is part of the experience.

Southern Vietnamese bánh xèo (from Hồ Chí Minh City and the Mekong Delta) is large — often 35 to 40 cm across — crispy, thin, generously filled with pork, shrimp, mung bean, and bean sprouts, and wrapped in large lettuce leaves. Central Vietnamese bánh khoái (from Hội An and Huế) is smaller — roughly 20 cm — thicker, slightly softer, and uses more modest fillings. It is typically wrapped in rice paper rather than lettuce. Both are eaten with dipping sauce but the central sauces tend to include fermented shrimp paste (mắm tôm) or peanut-based sauces rather than the standard nước chấm.