名詞
香港地道小食，係一種模仿魚翅羹嘅湯羹類食物；材料主要有粉絲、雞肉、冬菇，仲加咗豉油，所以係啡色；食嘅時候可以因應個人喜好加埋浙醋（量詞：碗） shark's fin soup; imitated Chinese vermicelli soup served in a small bowl of shredded chicken
Definitions (Wiktionary)
noun
wun tsai chi; imitation shark fin soup (a common Hong Kong street snack)