Taichung Alkaline Noodle Soup (Da Mian Geng)

Da mian geng is a Taichung-region alkaline noodle soup that originated in the early postwar era, made by simmering thick noodles kneaded with food-grade alkali together with their cooking water into a slightly thick, starchy broth with a distinctive alkaline aroma. Because the fresh noodles keep for only a day or two and transportation was once limited, the dish has remained highly regional, found mainly in Taichung, Fengyuan, Caotun, and Daya, and rarely elsewhere in Taiwan.

According to Wikipedia, da mian geng originated in Taiwan's early postwar period; because fresh noodles keep for only one to two days and transportation was once limited, it remains a dish highly confined to Taichung and nearby areas such as Fengyuan, Caotun, and Daya. Yingcai Da Mian Geng on Yingcai Road in the North District, open for about 50 years, was first selected for the Michelin Guide's Bib Gourmand list in 2020, but it is not among the 23 Taichung restaurants on the current Michelin Guide Taiwan 2025 Bib Gourmand list. Da mian geng, Dongquan chili sauce, and mayi are commonly grouped as the 'Taichung Three Treasures.'

What is Alkaline Noodle Soup (Da Mian Geng)

Da mian geng is a Taichung specialty made by cooking thick white noodles that contain food-grade lye (alkali) together with the cooking water until the broth turns slightly thick and starchy. Because of the alkali, the noodles take on a yellowish hue and a distinctive alkaline aroma; cooking them releases starch that naturally thickens the broth without needing any cornstarch — giving it the viscosity of a geng (thick soup). The broth is typically flavored with fried shallots, dried shrimp, braised pork, garlic chives, and preserved radish. The texture falls between noodle and porridge — smooth and easy to swallow. Many shops serve Dongquan chili sauce so diners can season their bowl the Taichung way.

Da mian geng was the breakfast and brunch of early Taichung farming and working-class families: the thick noodles were cheap and filling, the alkali helped preserve them, and the starchy broth was satisfying enough to last through an afternoon of labor. Even today, old stalls with decades of history can still be found along Yingcai Road, Gongyuan Road, and Taiyuan Road in the North District. The long-standing shop on Yingcai Road has roughly 50 years of history and tens of thousands of public reviews. Da mian geng does not appear on the Taichung Michelin Bib Gourmand list, but on the strength of old shops and massive local reputation alone, it holds its place as Taichung's most representative breakfast noodle.

How to eat it like a local

Local knowledge

Data compiled from the Michelin Guide, Taichung City Government Tourism Bureau, and a large volume of public reviews. Sponsored content has been filtered out. Photos will be replaced with Dio's own channel footage after on-site shooting.