Most people who discover Xiao Long Bao eventually ask the same question: what is that other dumpling? The one with the crispy bottom and the thick, golden crust? That is Sheng Jian Bao (生煎包), pan-fried Shanghai pork buns. They share DNA with soup dumplings but eat as an entirely different dish.
At Shanghai Taste in Rockville, MD, we serve both. This guide covers what Sheng Jian Bao are, how they differ from XLB, what makes a great batch, and how to eat them properly.
What Are Sheng Jian Bao?
Sheng Jian Bao (生煎包, pronounced roughly "shung-jen-bao") means "pan-fried bao." They are thick-skinned pork buns with a yeasted, bread-like dough that is filled with seasoned pork and gelatinized broth, then pan-fried on a flat griddle until the bottoms develop a deep golden crust. The dough is steamed through while the bottom fries, creating a bun that is crispy underneath and soft on top.
Like Xiao Long Bao, the filling contains pork aspic that melts into hot soup during cooking. Unlike XLB, the thicker wrapper retains more heat and the soup pools at the bottom of the bun rather than distributing evenly. When you bite through a SJB, the soup comes from the bottom half, which is why the standard technique is to nibble from the top first.
Sheng Jian Bao originated as a Shanghai street breakfast food. Vendors cooked them in large flat iron pans on open-air carts from early morning. Today they are served throughout the day, but they remain one of Shanghai's most iconic street foods alongside XLB.
Sheng Jian Bao vs Xiao Long Bao: Key Differences
The two are often discussed together, and they share the same filling concept. But they are distinct dishes that appeal to different moments and moods.
| Sheng Jian Bao | Xiao Long Bao | |
|---|---|---|
| Wrapper | Thick, yeasted, bread-like | Thin, unleavened wheat skin |
| Cooking method | Pan-fried then steamed | Steamed in bamboo baskets |
| Bottom | Crispy, deeply golden | Soft |
| Top | Soft, often sprinkled with sesame seeds and scallions | Pleated, with 18 folds |
| Size | Larger, two bites | Small, one bite |
| Soup | Moderate, pools at bottom | High, floods spoon on bite |
| Texture contrast | Crispy + soft + juicy | Delicate + silky + soupy |
| Best word for it | Satisfying | Refined |
Neither is better. They are different dishes for different appetites. If you want delicacy and broth, get XLB. If you want crunch, chew, and heft, get SJB. If you want both, order both. They complement each other the way a light and a dark dish would on the same table.
What Makes Great Sheng Jian Bao
The crust. The bottom should be crispy, not just browned. A great SJB has a crust that holds its crunch even after a minute or two on the plate. That requires sustained contact with a hot, lightly oiled pan and good timing. Under-fried SJB are chewy and doughy. Over-fried SJB taste bitter.
The dough. The wrapper should feel light, not heavy. Good SJB dough has a slight yeast-driven lift that keeps the bun from tasting stodgy. The ratio of dough to filling matters. The filling should be at least half the bun by volume.
The sesame and scallion top. Traditional SJB finish with sesame seeds and chopped scallion pressed into the top before the lid goes on to steam. This is not decoration. The sesame toasts during steaming and adds depth. A SJB without sesame is missing a layer.
Fresh, made to order. Like XLB, SJB should not be pre-made and held. The crust softens quickly once removed from the pan. The best SJB you will ever eat are the ones that arrive still sizzling from the griddle.
How to Eat Sheng Jian Bao Without Getting Burned
SJB hold heat longer than XLB because the thick dough insulates the filling. The soup inside stays hotter for longer. The correct approach:
- Wait a moment. Let them rest for a full minute after they arrive. The filling inside is significantly hotter than the outside suggests.
- Pick up from the top pleat. Use chopsticks to grip the top of the bun, not the sides. The dough is sturdier than XLB wrappers, but the sides hold the most soup and will burst if squeezed.
- Nibble from the top. Take a small bite from the top of the bun to release steam and let the soup cool slightly.
- Sip, then eat. Sip any soup that pools from the opening. Then eat the rest in one or two bites.
- Dip in vinegar with ginger. Black vinegar and julienned ginger cut through the richness. Do not skip this step.
Do not squeeze from the sides. Do not bite the bottom. The crispy bottom is structural, and it is the best part. Eat it last.
Sheng Jian Bao at Shanghai Taste
Our Sheng Jian Bao are pan-fried fresh to order. We use the same pork and aspic filling as our XLB, made daily in our Rockville kitchen. The buns are finished with sesame seeds and scallions. We cook them in batches on a flat griddle until the bottoms reach the dark, crunchy crust that defines a properly made SJB.
Find them under Appetizers on our full menu. Order them alongside Xiao Long Bao to taste both Shanghainese pan-fried and steamed dumpling traditions side by side. One order of each is enough for two people as an appetizer.
Sources and Further Reading
Frequently Asked Questions
What is Sheng Jian Bao?
Sheng Jian Bao (生煎包) are pan-fried Shanghai pork buns with a thick, yeasted dough wrapper and a juicy pork-and-broth filling. They are pan-fried on a flat griddle until the bottoms turn deeply golden and crispy, then steamed to cook the filling through. They are finished with sesame seeds and scallions. Unlike Xiao Long Bao, which are steamed and delicate, Sheng Jian Bao are larger, heartier, and have a pronounced crispy bottom.
What is the difference between Sheng Jian Bao and Xiao Long Bao?
Sheng Jian Bao are pan-fried with a thick, yeasted dough and a crispy golden bottom. Xiao Long Bao are steamed with a thin, unleavened wrapper and no crust. Both contain a pork filling with gelatinized broth that melts into soup during cooking, but XLB are smaller, more delicate, and deliver more soup per bite. SJB are larger, chewier, and more filling. XLB feel refined; SJB feel satisfying.
How do you eat Sheng Jian Bao?
Let Sheng Jian Bao rest for one minute after they arrive — the filling stays very hot. Pick up from the top pleat with chopsticks. Nibble a small hole from the top to release steam and let soup cool. Sip the broth from the opening, then eat the bun in one or two bites. Dip in black vinegar with ginger slivers. Do not bite from the bottom — the crispy bottom is structural and the best part. Eat it last.