Leavened Rising Rice Cake

发粿 (also called 酵粿) is one of the five canonical items in the Teochew 粿品 roster — the rice-based ritual foods that anchor Chaoshan festival and ancestral observance. Fermented rice-cake traditions in southern China draw on ancient rice-farming culture: wild-yeast leavening of rice flour was practiced long before commercial yeast became available, producing lighter cakes distinct from denser steamed glutinous-rice forms. In Teochew custom, 发粿 is placed on the ancestral altar during New Year and major deity festivals; its split crown is read as the heavens 'smiling open' with blessing. Multiple Chaoshan food ethnography accounts and community records document 发粿 alongside 甜粿, 菜头粿, 鼠麹粿, and 栀粿 as the complete seasonal cycle of Teochew festival 粿.

Mildly sweet with the faint yeasty warmth of a fresh bread crust; the interior is spongy and slightly chewy, the fermented tang almost imperceptible beneath the sugar. The prized piece is the split crown — red-tipped, slightly caramelized at the surface, yielding to a moist, springy interior.

Yeast metabolizes dissolved sugar in the rice-flour batter, producing CO₂ and ethanol. The CO₂ distributes as micro-bubbles throughout the batter, creating an aerated sponge structure. During steaming, the outer surface firms rapidly as starch gelatinizes; the interior continues generating gas and expanding under heat. When the pressure differential exceeds what the partially set dome can contain, it ruptures upward — the 'laughing mouth' (开口笑) split that is both a quality signal and a cultural symbol. Adding a small amount of lye water (碱水, potassium carbonate solution) can even out starch gelatinization and suppress excess sourness from over-fermentation, keeping the flavor clean and sweet.