Fěnzhēng Ròu Jiāmó (粉蒸肉夹馍) is a roujiamo built on steamed rice-flour pork, the split mó packed with pork that has been coated in spiced toasted rice flour and steamed until soft. The angle here is the filling's distinctive texture: fěnzhēng ròu is not braised or chopped but jacketed in a paste of ground, dry-roasted rice that thickens and clings as it steams, so the meat arrives tender, fatty, and bound in a faintly grainy, deeply seasoned coat rather than swimming in sauce. Get it right and the mó carries a soft, savory, almost sticky filling with a clean rice fragrance; get it wrong and the coating turns either chalky and dry or to a wet slick that soaks the bread through.
The build has two halves and both have to land. The pork, usually belly or a fatty cut, is sliced and marinated in soy, fermented bean paste, ginger, and spice, then tossed with coarsely ground rice that has been toasted until nutty. It steams long and slow until the fat renders into the rice coat and the meat goes spoon-tender. The mó, a low-leavened wheat bun with a firm shell and a soft layered inside, is split along its seam and the steamed pork tucked in with a little of the loosened rice paste. Good execution shows in the contrast and the moisture: the bun stays structurally crisp on the outside while the filling is yielding and rich, the rice coat is moist and savory rather than dry, and the fat is rendered enough to lubricate without running. Sloppy versions fail in clear ways. Under-steamed, the meat is firm and the rice flour stays raw and powdery; too lean a cut leaves the coating dry and the bite tight; too much loose paste and the mó goes soggy and collapses around it; a bun that is under-baked turns to wet dough against the warm filling instead of cradling it.
It shifts mostly by the cut and the seasoning of the rice coat. Fattier belly gives a softer, glossier filling, while leaner versions run drier and need a wetter steam. Some kitchens lean the marinade toward sweet bean paste, others toward chili and Sichuan pepper for a numbing, hotter read. A scatter of fresh cilantro or pickled greens is often added inside to cut the richness. The classic braised-pork roujiamo is the better-known relative and works on entirely different logic, a wet braise rather than a steamed rice jacket, so it belongs in its own article. The same is true of the cumin-lamb and donkey-meat fillings, each a distinct preparation rather than a variation to be crowded in here.