First-Rank Jade-Belt Cake

First-Rank Jade-Belt Cake comes from Tongyang, a town on the shore of Lake Chao in the Yangtze-side region of Anhui — it is a Chao Lake sweetmeat, not a Huizhou one. Its exact age is unsettled (local accounts range from over two hundred to several hundred years), and it was originally called si-xiang tao-ren gao ("four-inset walnut cake") for the "four-inset" method of setting the fillings. By tradition a Qing emperor on a southern tour tasted the cake at Tongyang and renamed it yi-pin ("first-rank") jade-belt cake — a story carried as legend, not record; yi-pin is simply an honorific for top grade. The craft was listed as a Chaohu municipal intangible-cultural-heritage item in 2009 and later entered the Hefei municipal list. It is distinct from the Huizhou layered hotpot of a similar-sounding name.

The cake slices the way a good tea-cake should — paper-thin, almost cut-through but still hanging together, what locals call "as if broken yet whole." Each slice is framed by a clean white rice-flour border, and inside that frame sits a cross-section of fillings: gold-yellow walnut, translucent jade-green candied plum, and pale lotus seed and kumquat like pearls. On the tongue it is soft and fine-grained rather than chewy, sweet but not cloying, with the resin of walnut, the sour-sweet edge of green plum and a clear lift of osmanthus. A poorly made one is dry and sandy, crumbles at the cut instead of holding the thin sheet, or carries the raw "dry" taste of rice flour that was never properly aged.

This belongs to the pian-gao (sliced-cake) family, and its softness comes from handling the rice flour, not from gelatinising it like mochi. The glutinous rice is first dry-roasted, milled, then aged in a cool store for months — "ageing" drives off the raw "dry" character and relaxes the starch so the finished slice turns silky and resists snapping; the powder is then let to take back a little moisture ("moistening") before use. Sugar and sesame oil (or lard) act as plasticisers, coating the starch grains so the packed cake binds tightly yet stays tender and sliceable. The fillings and a white rice-flour border are layered into the mould by the "four-inset" method, steamed to set, then cold-set for twelve hours or more so the strata firm into clean, distinct bands — which is why the white belt and the coloured core stay sharp-edged when the loaf is shaved into paper-thin sheets.